Measurement or marking
Enter what you see on the part or the plate; the result updates as you type.
130 free tools turn a marking or a caliper reading into the line a supplier can quote. Each one explains what every mark or dimension means, draws the part and writes the line for the request.
Lines from several tools collect into one request: Add to RFQ keeps them in this browser tab and opens the form.
No tool recognises this marking or these words yet. Send it with a photograph in the request below.
Paste a parts list or the lines of an offer, one per line. A designation opens the reader that reads it; a "fitted vs offered" pair opens the replacement check with both parts filled in. Rows copied from a spreadsheet can go in as they are: the fitted and offered parts are taken from their columns.
Copy the marks as they are, and the tool sorts them into fields.
DN, PN, ASME Class, JIS K, WOG and the body material cast on a valve, decoded and written as an RFQ line.
Checks a replacementIP code, IM mounting, thermal class, duty, IE class, IEC frame with its feet, shaft and flange sizes, rated current and Ex marking read from a motor plate.
Checks a replacementA rolling bearing designation split into type, bore and suffixes, with a section of the bearing.
Checks a replacementISO classes such as 8.8 and A4-80, SAE grade lines and ASTM B7 or 2H on a bolt head, stud or nut.
Checks a replacementConstruction, core, grade, finish and lay of a steel wire rope such as 22 6x36WS-IWRC 1960 B sZ, drawn in section.
Checks a replacementIACS UR W11 hull steel grades such as AH36 or EH36: yield, tensile, impact test temperature and energy.
Checks a replacementASME B16.20 colours on the ring edge, or the ring marking: winding metal, filler, and when an inner ring is required.
Checks a replacementNEK 606 letters such as BFOU(i): insulation, braid and sheath, fire resistance, screens, voltage and size.
Checks a replacementAWG and kcmil to mm2 and back, with the neighbouring IEC 60228 sizes drawn to scale.
Checks a replacementEN 12756 letters such as BQ1EGG: seal face, seat, secondary seals, spring and other parts, read by position.
Checks a replacementIEC 60269 class letters such as gG or aM, the screw fuse indicator colour, and NH, Diazed, Neozed and cylindrical sizes.
Checks a replacementA miniature circuit breaker marking such as C16 6000 3: the B, C or D tripping band in amps, poles, breaking capacity and class.
Checks a replacementA contactor, overload relay or switch-disconnector label (AC-3 9 A 400 V, class 10, AC-23A): category, coil, contacts and what A1, 13-14 and 95-96 mean.
Checks a replacementR-404A, R-134a or R-717 decoded: formula, family, blend components and the ASHRAE 34 safety class.
Checks a replacementDIN 51502 codes of greases (KP2K-30) and oils (HLP 46, CLP 220): use, additives, NLGI or ISO VG, temperatures.
Checks a replacementTube lamp codes such as T8 36W/840 G13 or F32T8/841: diameter, base, watts, colour temperature and rendering group.
Checks a replacementAn Ex marking such as II 2G Ex db eb IIC T4 Gb: types of protection, gas or dust group, temperature class, zones and certificate suffix.
Checks a replacementAn IP code such as IP66/IP67, IP55 or IPX7: solids and dust, water, the access and test letters, and what each digit keeps out.
Checks a replacementAn AWS or ISO electrode or wire designation such as E7018-1 H4R or ISO 2560-A E 42 3 B 32 H5: strength, impact temperature, covering, positions, hydrogen.
Checks a replacementAn ISO 14726 ship pipe marking such as green-violet-green, or a medium such as ballast water: main colour, additional band, the medium and the RAL colours.
Checks a replacementAn EN 1492 flat or round sling from its colour or WLL: the working load limit, the label colour for the material and the WLL by mode of use.
Checks a replacementAn EN 3-7 extinguisher label such as 6 kg ABC powder 43A 233B C: agent, charge, fire classes and what each rating means.
Checks a replacementAn ISO 1629 or ASTM D1418 rubber code such as FKM 75, NBR 70 Shore A or EPDM: the chemical name, the group, the other spelling and the hardness.
Checks a replacementThe core colours of a power cable such as brown, black, grey, blue and green-and-yellow: the function of each under IEC 60445 and where older colours mean something else.
Checks a replacementA safety sign code such as E001, F001, M002, P003 or W012: the category, its shape and colours, and the meaning of the sign, for an order of ship signs.
Checks a replacementAn EN 1089-3 shoulder colour such as white, maroon or dark green, or a gas name: the gas or the hazard group, with the RAL colour, drawn on a cylinder.
Checks a replacementAn EN 12195-2 lashing strap label such as LC 2500 daN, SHF 50 daN, STF 350 daN: what each figure means, the label colour and the unit arithmetic. Not a lifting sling.
Checks a replacementA zinc, aluminium or magnesium anode by metal or specification: the water it suits, the design values two sources agree on and why metals are not mixed on one hull.
Checks a replacementRead a European steel name or number by EN 10027 part by part (S355J2+N, 42CrMo4, X5CrNi18-10, 1.4401), with a check of an offered steel.
Checks a replacementRead a transformer vector group such as Dyn11, YNd1 or YNyn0d5: windings, neutral, clock number and phase displacement, with a parallel check.
A NEMA enclosure type such as 4X, 12, 3R or NEMA 12/4: indoor or outdoor use, dust, water, ice, corrosion, oil and the one-way IP comparison.
A filter element rating such as beta 10(c) >= 1000 or 10 micron absolute: particle size, the (c) calibration, capture efficiency and an RFQ line.
Decodes ANSI/IEEE C37.2 protection relay numbers such as 27, 50/51, 51N, 87G or 81O/81U, with each letter after the number in plain words.
Measure the part, and the tool finds the standard size and shows its neighbours.
EN 1092-1, ASME B16.5 and JIS B 2220 flanges from the outside diameter, bolt circle and holes, with the gasket.
Checks a replacementThe ISO 5211 flange between a quarter-turn valve and its actuator, F03 to F16, from the pitch circle and bolt thread.
Checks a replacementBSP, NPT, metric, UN, JIC, ORFS and PG threads from a caliper reading and a thread count; a spanner size gives the metric thread.
Checks a replacementISO/EN, ASME and JIS steel pipe and CuNi tube from a measured outside diameter or circumference.
Checks a replacement24° cone cutting ring fittings, light (L) and heavy (S) series, from the tube, the nut thread or the spanner.
Checks a replacementAS568, ISO 3601 and JIS O-rings from the inside diameter and cross-section, with the material.
Checks a replacementBore and rod against the ISO 3320 sizes: areas, push and pull forces, speeds and oil per stroke.
Shaft × bore × width from a marking such as 25x40x7 AS NBR, with the type letter and lip material, drawn in section.
Checks a replacementClassical, narrow, inch and V-ribbed belts from a designation or a measured section, with the three lengths.
Checks a replacementPitch, length, teeth and width from 390L100, 1200-8M-30 or T10-1210: inch and metric profiles.
Checks a replacementThe DIN 6885-1 key for a shaft, or the shaft for a measured key, with the keyway depths, drawn to scale.
Checks a replacementThe module or diametral pitch of a spur gear from its teeth and outside diameter, with the gear drawn.
Checks a replacementISO 606 A (ANSI) and B series chains from the pitch, roller and inner width, drawn from the side and above.
Checks a replacementPt100 and Pt1000 ohms to °C and back with the class tolerance, and the IEC thermocouple cable colours.
Checks a replacementA coil label such as 24 V DC 8 W ED 100 % 2/2 NC: voltage, duty, insulation class, valve function, and the EN 175301-803 plug form from its contact spacing.
Checks a replacementA DIN 471 shaft or DIN 472 bore circlip from its nominal size, groove or thickness: ring thickness, groove diameter and width.
Checks a replacementAn EN 12756 seal from the shaft diameter, installation length or seat bore: l1K and d7, drawn to scale.
Checks a replacementA DIN 71412 grease nipple from its thread, a measured thread or the hex: head form A, B or C and the hex across flats.
Checks a replacementAn ISO 7241 series A or B or an ISO 16028 flat-face coupling half from its body size or a measured nose diameter: profile, size and which halves mate.
Checks a replacementA PG, metric or NPT cable gland thread from its designation, a measured diameter and pitch, or the entry hole: outside diameter, pitch, drawn to scale.
Checks a replacementA DIN 7081 flat level gauge glass, type A or B, reflex or transparent, from its size or a measured length, or a DIN 7080 round disc: the dimensions, drawn to scale.
Checks a replacementA sieve number or a screen opening for a strainer or filter: the ASTM E11 number and the ISO 3310-1 aperture in µm and mm, and the opening from wires per inch and wire diameter.
Checks a replacementA JIC 37 degree or ORFS hydraulic fitting from its dash size, thread or a measured diameter and threads per inch: the thread, the tube size and the ORFS O-ring.
Checks a replacementA plain, large or spring washer to ISO 7089, ISO 7093, DIN 125, DIN 9021 or DIN 127 by bolt size or measurement: hole, outside diameter and thickness, drawn to scale.
Checks a replacementThe spanner size of a hex head bolt or nut and the hex key of a socket head cap screw, M3 to M36, to ISO and DIN, with the four sizes where they differ, drawn to scale.
Checks a replacementLimits of size of ISO 286 hole and shaft classes such as H7, g6, k6 and p6, over 3 to 250 mm, with the clearance or interference of a fit, drawn to scale.
The ISO 1234 (ex DIN 94) split pin for a hole, a bolt or a clevis pin: pin diameter, eye and standard lengths, sizes 0.6 to 20 mm, drawn to scale.
Checks a replacementA taper bush such as 2012 or 2517-40: what the four digits mean, bore range in mm and inch, screws and hex key, sizes 1008 to 5050, drawn to scale.
Checks a replacementA gas detector reading in ppm, % vol, mg/m3 and % LEL at once: molar volume at 20 or 25 °C, LEL from the calibration certificate, with the working.
Build the item from its parts: type, size, ends, build.
Hose type and size, both end fittings with their threads and the length, as one RFQ line.
Checks a replacementThe EN 837-1 range for a working pressure, the class error in bar, size and connection, on a live dial.
Packing section, number of rings and length per set from the shaft, bore and depth of a stuffing box.
An ISO 4406 code such as 18/16/13 as particles per mL against a target, and a filter beta as efficiency.
The international shore connection and the MARPOL oily and sewage discharge flanges: sizes, bolts and gasket, drawn.
A pump size such as 65-50-160 or NK 50-250/241: suction and discharge DN, nominal and actual impeller, and a check of an offered size.
Checks a replacementAn industrial plug or socket such as 32A 3P+E 3h: poles, rating, earth position and colour give the supply, with the marine 11h and reefer 3h.
Checks a replacementThe size of a Storz fire hose coupling, D, C, B, A and the others, from the distance between its lugs.
Checks a replacementAn IACS UR W18 stud-link anchor chain by grade U1, U2 or U3 and diameter: proof and breaking loads from the rule formulas and the common link proportions, drawn to scale.
Checks a replacementAn ISO VG, SAE engine or SAE gear oil grade, or a measured viscosity: the defining range and the grades of the other systems that overlap at the same temperature.
Checks a replacementAn ISO 8217 fuel grade such as RMG 380, DMA or DFB, or a trade name such as MGO or VLSFO: what the letters and the number mean, and the parts of the fuel system to ask for.
Checks a replacementAn EN 13889 bow or dee shackle from its marked WLL, inch size or a measured pin: the WLL, the dimensions two maker tables agree on, the marks to look for, drawn to scale.
Checks a replacementAn EN 818-4 grade 8 chain sling from its chain size, legs and angle: the WLL from the standard table for every configuration, the tag to look for, drawn to the angle.
Checks a replacementAn EN 558 basic series and DN, or a measured gap between flanges: the face-to-face length and which series fit, so a replacement valve drops into the existing pipe, drawn to scale.
Checks a replacementThe DIN 46235 copper compression lug for a cross-section and a stud: studs in the standard, stud hole, barrel and die code, 6 to 300 mm2, drawn to scale.
Checks a replacementAn adapter sleeve such as H 310 or H 2310 from the sleeve, a K bearing, a KM nut or the shaft: nut and washer, bearing bore, sleeve length, sizes 04 to 40, drawn to scale.
Checks a replacementThe bolts or studs for a flange such as DN100 PN16, 4" 150# or 10K 100A, or from the holes counted: number, thread, nuts, ASME stud length, drawn to scale.
Checks a replacementA DIN 580 eye bolt or DIN 582 eye nut such as DIN 580 M16 or eye nut M24, or from the measured thread: WLL straight up, per part at up to 45° and at the side, eye size, drawn to scale.
Checks a replacementSaybolt Universal seconds (SUS) and cSt between each other, and cP with your density, at one temperature; Redwood, Engler and Furol are named, not converted.
Enter the flow, the sizes or the load, and the calculator shows the result and every step of the working.
Kv to Cv and back, and the flow, pressure drop or Kv of a liquid duty, with the flow curve.
The belt for two pulleys and a centre distance: V-belt datum length, or a timing belt with whole teeth.
Mass of plate, round, square and hexagon bar, tube and rectangular tube, per metre, per piece and per lot.
A centrifugal pump at another frequency or speed: flow, head and shaft power by the affinity laws, and the motor loading.
The velocity of a liquid in a pipe from the flow rate (m3/h, l/min, l/s, gpm) and an ASME size with schedule, an OD and wall or the inside diameter, and the smallest inside diameter for a velocity.
The friction pressure drop and head loss of a liquid in a straight pipe from the flow, an ASME size with schedule or the inside diameter, the length and the viscosity, with the Reynolds number, the Colebrook-White friction factor and minor losses from K.
The hydraulic power of a pump from the flow rate and the head or differential pressure with the density, the shaft power and motor input power at the efficiencies entered, head and pressure converted into each other, and the flow or head for a given shaft power.
The heat duty of a cooler from the flow and the inlet and outlet temperatures of one side, the missing outlet temperature or flow of the other side from the heat balance, the LMTD for counterflow and parallel flow, and the UA.
The volume of liquid in a box, vertical or horizontal cylindrical tank (flat ends or 2:1 heads) from its inside dimensions and the sounding, the ullage, the mass at a density, and a sounding table.
The voltage drop in a copper or aluminium cable from the length, the current or power and the cross-section (mm2 or AWG), for DC, single-phase or three-phase, the voltage at the load and the power lost, and the smallest IEC 60228 size for a drop limit.
The voltage, capacity in Ah and stored energy of identical batteries or cells in series and parallel (2s2p), the current and ideal running time on a load in A or W to the depth of discharge entered, and how many batteries in series and parallel for a target voltage and capacity.
The fuel consumption of a diesel engine or generator set from its shop-test SFOC and the power or a per cent load: kg/h, t/day and, with a density, m3/day; the SFOC back from a flow meter or tank soundings, and the days the fuel on board lasts.
The full-load current of a three-phase, single-phase or DC motor from the nameplate kW, voltage, cos phi and efficiency, with kVA and kvar; the shaft power back from a current, and the starting current from the IA/IN ratio.
The free movement of a pipe run from its length, the installation and working temperatures and the mean expansion coefficient, your own or an example for five materials; contraction on cooling, and the temperature rise or length for a stated movement.
The litres of a marine coating for an area from the volume solids and the dry film thickness on the data sheet: the spreading rate, the wet film (with thinner too), losses, coats and cans; the dry film a volume gives in reverse.
The filling time and free air of a compressed-air receiver between two pressures from its volume and the air supply FAD, gauge or absolute; the receiver volume for a stated free air, and the pressure after a draw.
The torque, power or speed of a rotating shaft from the other two (kW, hp, PS; N·m, kN·m, kgf·m, lbf·ft; 1/min, rad/s), with the working, and the output torque and speed through a gear or belt drive at the ratio and efficiency entered.
Flow, speed, torque and power of a hydraulic pump or motor from its displacement in cm3/rev, with the efficiencies from the data sheet; or the displacement for a stated flow and speed, or torque and pressure.
The synchronous speed of an AC motor or generator from its poles and supply frequency (120 x f / p), the poles and slip from a nameplate speed, the frequency of a generator, and the synchronous speed at 50 or 60 Hz, with the working.
The saturation temperature of water and steam from a gauge or absolute pressure, and the saturation pressure from a temperature, by the IAPWS-IF97 equations, with the working.
The CCAI of a residual marine fuel from its density at 15 °C and its viscosity, by the ISO 8217 equation, with the working; and the density for a given CCAI.
The polarization index, the DAR and the absorption ratio from insulation tester readings, and a winding reading corrected to 40 °C, with the IEEE 43 reference figures and the working.
The basic rating life of a rolling bearing by ISO 281, L10 and L10h from C, P and the speed, with the working; and the C needed or the P allowed for a target life.
Usable oil volume of a nitrogen-charged accumulator between two working pressures, isothermal and adiabatic, with absolute pressures; or the gas volume for a stated usable volume.
NPSH available at a pump suction from the tank pressure, the vapour pressure (IAPWS-IF97 for water), a flooded height or suction lift and the suction losses, with the margin and ratio over the pump NPSHr.
The water that condenses out of the charge air after the cooler, from the intake air, the charge air pressure and the outlet temperature, with the dew point.
Propeller speed from pitch and shaft speed, apparent slip by log or GPS, true slip with your own wake fraction, and the reverse sums.
The observed bunker volume at tank temperature to the volume at 15 °C and the tonnes in vacuum and in air by the 1980 Table 54B VCF, and back from a mass.
The Admiralty coefficient of a ship, the power for a new speed or displacement by the cube law, the speed for a power, and fuel per day and per mile.
The cylinder oil feed rate in g/kWh from the oil used, the power and the hours, or the litres per day for a feed rate, per cylinder too.
Adds sound levels in dB or dB(A) on energy, takes the background noise off a total, averages readings, and works out identical sources and distance.
Blowdown as a share of the feed and the steam, in kg/h, and the cycles of concentration, from the feed water TDS, chloride or conductivity and the boiler limit.
The pressure for a pipe wall, the wall for a pressure or the hoop stress by the Barlow formula, from the OD and the S you enter; joint factor and allowance.
Heat lost by a steam, thermal oil or hot water line, insulated or bare: W per metre, surface temperature and MWh per year from your k and h.
The free air delivery of a starting air compressor from the time to fill a receiver between two pressures; per cent of rated and fill time at a rated FAD.
The flow of a sprinkler, water mist or hose nozzle from its K-factor and pressure, the pressure for a flow, K from a test, and N nozzles.
The vertical and horizontal deflection of each crank from the dial gauge readings B, P, T, S, with a table, a chart and your limit.
Indicated power of a two- or four-stroke engine from pmi, bore, stroke and speed; pme from a power, mechanical efficiency and cylinder balance.
The temperature at which a fuel reaches its injection viscosity, and the viscosity at any temperature, from two measured points by ASTM D341.
Combustion air, heat removal air at a 12.5 K rise and the total by the ISO 8861 rule (greater of qc + qh and 1.5 x qc), with the air per fan.
Air flow for a sensible load and delta T, air changes per hour, duct area, round and rectangular sizes, velocity, equivalent diameter.
The list when a weight is moved across the ship or lifted with the crane, and the distance or weight for an allowed list.
The free air a pneumatic cylinder takes per cycle and per minute, in l/min, m3/h and cfm, with the theoretical force and the tubing share.
Dew point from air temperature and humidity, the steel surface margin against the usual 3 °C rule, and the pressure dew point of compressed air.
The grease to add when relubricating a rolling bearing, from its outside diameter D and width B, with grease gun strokes and the speed factor n x dm.
The rate of a helical compression spring from the wire, outside diameter and active coils, with the load at the fitted length.
The capacitor kvar to raise cos phi of a load in kW or kVA, the line current before and after, and the capacitance per phase in delta or star.
The click torque wrench setting with a crowfoot, adapter or extension, in line or at an angle, and the torque at the bolt for a setting.
The stretch of a stud or bolt from its preload, or the preload from a measured stretch, on the thread stress area or a reduced shank.
Enter what you see on the part or the plate; the result updates as you type.
Up to ten lines stay in this browser tab for an hour and open in the RFQ form.
Attach photographs, and Vessel Core checks the line against them before an offer goes back.
No. They run in the browser on each page, and what you type stays there until you send the RFQ form.
It keeps the line in this browser tab, up to ten lines for an hour, and opens the RFQ form with the lines in it. Lines from several tools collect into one request.
No: it is a cross-check on a marking or a measurement. Attach photographs and the plate data, and the supply desk checks them against each other before an offer goes back.
Sixty-nine can: the steel designation reader, the eye bolt finder, the flange bolt set finder, the adapter sleeve finder, the taper bush reader, the cable lug finder, the split pin size finder, the spanner size finder, the washer size finder, the sacrificial anode alloy reader, the lashing strap label reader, the gas cylinder colour reader, the valve face-to-face finder, the JIC and ORFS fitting identifier, the mesh to micron converter, the chain sling WLL finder, the gauge glass size finder, the lifting shackle reader, the marine fuel grade reader, the ISO 7010 safety sign reader, the conductor colour code reader, the oil viscosity grade converter, the elastomer code reader, the anchor chain grade reader, the cable gland thread identifier, the fire extinguisher label reader, the lifting sling colour reader, the hydraulic coupling identifier, the pipe colour code reader, the welding consumable reader, the grease nipple identifier, the mechanical seal size finder, the circlip size finder, the solenoid valve coil reader, the contactor marking reader, the circuit breaker marking reader, the IEC 60309 plug and socket reader, the end-suction pump size reader, the refrigerant number reader, the tube fitting identifier, the mechanical seal material code, the Storz coupling identifier, the gear module identifier, the parallel key finder, the actuator flange identifier, the wire size converter, the marine cable designation reader, the Pt100 and thermocouple reader, the pipe size identifier, the ship steel grade reader, the bolt and nut marking reader, the flange identifier, the hydraulic hose assembly builder, the thread identifier, the roller chain identifier, the O-ring size finder, the spiral wound gasket reader, the wire rope designation reader, the lamp code reader, the valve body marking reader, the bearing designation reader, the oil seal size reader, the motor nameplate reader, the V-belt identifier, the timing belt reader, the lubricant code reader, the fuse link reader, the Ex marking reader and the IP code reader take the offered item in a second field and mark each point as meets, does not meet or check; on this page, type both markings with vs between them, such as 6205-2RS vs 6205-2Z, to open the check filled in. It is a check on the markings; the offer’s data sheet or certificate decides.
From the standards and makers’ data that each tool names in its sources, on its own page. Where sources disagree, a tool leaves the figure out rather than guess.
A request can start without a part number: the plate, a photograph of the old part and its measurements are enough for Vessel Core to check the item.