HEAT AND ENGINE PHYSICS LAB EQUIPMENTS Lab Equipment Manufacturer, Supplier and Exporter in India

Forty-five items are listed here, RE-0001 to RE-0046, and they are two quite different purchases filed together. Thirteen are engine models, from two-stroke and four-stroke petrol, diesel and gas engines through a gas turbine and a Wankel to steam engines with boilers. The rest is the heat physics bench: calorimeters, expansion and conductivity apparatus, radiometers and gas-law equipment. The first question to settle, and the listing answers it nowhere, is whether the engine models actually run. Everything about room, fuel, extraction and safety follows from that single answer.

Do the engines run, or are they display models?

Ask this of RE-0001 to RE-0012 before anything else, in writing, because the two answers lead to completely different purchases.

If they are sectioned or cutaway display models, they teach construction, the four phases of the cycle and valve timing, they need nothing but a bench and they carry no hazard beyond sharp cut edges. In that case ask whether the model is motorised so the mechanism can be turned slowly while the class watches, whether the valve and ignition timing can be followed, and whether a timing diagram and a labelled cross-section come with it. Those three things are what make a cutaway worth its price.

If they are working engines, the purchase brings obligations your institution has to meet before the equipment is used:

• Exhaust. A running petrol, diesel or gas engine produces carbon monoxide, which is colourless, odourless and dangerous at low concentration. These engines must be run outdoors or with the exhaust ducted outside, never in a closed teaching room, and never on the strength of an open window. Ask what exhaust connection the engine provides.
• Fuel. Ask what fuel each engine takes and how much. Petrol and diesel in a school mean a flammable-liquids store, approved containers, no decanting near ignition sources, and a suitable extinguisher at the bench. For the gas engines, ask whether the fuel is bottled gas, and if so plan cylinder storage and restraint, ventilation and a leak-test routine.
• Hot and moving parts. Exhaust pipes and cylinder heads reach temperatures that burn on contact and stay hot long after shutdown. Ask what guarding covers the flywheel, belts and couplings, whether there is an accessible stop, and what the cooling arrangement is.
• Noise. Ask the sound level. A small engine in a hard-walled laboratory is loud enough to need hearing protection and to disturb the rooms next door.

RE-0011, steam engine with boilers: a fired boiler is a pressure vessel

This is the item on the page that deserves the most care, and the questions are specific. Ask the working pressure and the test pressure; whether a safety valve is fitted and at what pressure it is set; whether there is a pressure gauge and a water-level sight glass that can be seen from the operating position; and how the boiler is heated, since an electrically heated boiler is a different proposition from one fired by methylated spirit or solid fuel. Ask what documentation comes with it and whether a boiler of this size requires any statutory inspection or registration where you are, which is a question for your own authority rather than for the supplier.

Three rules belong in the practical sheet: the boiler is never run below its minimum water level, the safety valve is never blocked, weighted or adjusted, and the engine is operated by a member of staff rather than by students. If the boiler is spirit-fired, the burner is filled cold and never refilled while lit, and the spirit is stored away from the apparatus.

The heat bench, by topic

Calorimeters: the answer depends on heat you cannot see leaving

Eight codes here are calorimeters of one sort or another and the listing distinguishes them only by material. The things that decide whether a calorimetry result is any good are not in the names, so ask:

• Is it lagged, and is there an outer jacket? A bare metal cup loses heat fast enough to swamp the measurement. Ask what insulation and what jacket are supplied.
• Is the mass of the calorimeter marked on it, and is its material stated? The specific heat calculation needs both, and a calorimeter with no stamped mass has to be weighed every time it is used.
• Lid, stirrer and thermometer hole. Ask whether a lid with a stirrer and a thermometer hole is included, and what diameter that hole is, because it has to match the thermometers you actually own. Check that against the stem diameters under Thermometers before ordering either.
• For RE-0032, the continuous-flow calorimeter, ask what provides the steady flow, whether the constant-level tank (RE-0030) is the intended companion, and whether two matched thermometers are supplied, since the whole measurement is a temperature difference between inlet and outlet.
• For RE-0044 to RE-0046, which together make the mechanical-equivalent-of-heat experiment, ask whether the three units are sold as a set, what the friction load is and how the work done is counted.

Expansion and conductivity: ask what else the experiment needs

Linear expansion is measured by heating a rod and reading a very small movement, so ask how that movement is read, whether by spherometer, micrometer screw or dial gauge, and whether the gauge is supplied; and ask what heats the rod, since most of these experiments assume a steam supply and a steam generator is rarely in the quotation. For the conductivity apparatus (RE-0029) ask which metals are supplied and whether the rods are identical in length and cross-section, because the comparison is meaningless if they are not. For the set of equal cylinders (RE-0036) ask the materials and whether each is marked.

For the gas-law apparatus, ask what the pressure is read with on the constant-volume air thermometer (RE-0031) and on the Charles's law apparatus (RE-0026), and whether a mercury-free pressure arrangement is available, since the same mercury restrictions set out under Fluid Mechanics Physics Equipments apply to anything mercury-filled in this range too.

Four items with their own hazards

• RE-0039, ether thermoscope. Ask what liquid it actually contains and whether it is supplied charged. If it is ether, that is an extremely flammable liquid with a very low flash point which also degrades on storage, so it must be kept away from flames, sparks and hot surfaces, stored as a flammable, and replaced rather than kept indefinitely. Ask the supplier for the safety data sheet before ordering, and ask whether a less hazardous filling is available.
• RE-0018, bar-breaking apparatus. The experiment deliberately breaks a metal bar by thermal contraction, and the pieces leave at speed. Ask what guarding or shield is supplied, specify eye protection, and keep the class back behind a line rather than crowded round.
• RE-0015 to RE-0017, RE-0027, RE-0028 and anything heated. Ball-and-ring, bar-and-gauge and compound-strip experiments all involve metal hot enough to burn and hot long after it stops glowing. Ask whether tongs and a stand are supplied, and allow cooling time in the lesson plan rather than at the end of it.
• RE-0034, RE-0035 and the air pump. A Crookes radiometer is an evacuated glass bulb and the air pump is used with evacuated glassware; both fail suddenly rather than cracking first. Ask what the glassware is rated for and specify eye protection for pumping-down demonstrations.

Also worth confirming

Quote the code rather than the name. Eleven names in this listing are in capitals with a boilerplate suffix, one carries a hyphenated web address where its name should be, one code is written without its hyphen so it will not sort with the rest, RE-0008 is absent from the sequence, three calorimeter entries overlap, four expansion entries overlap and several names have lost the apostrophe from the scientist they are named after. Ask also for dimensions, materials and masses, the manual with the expected result, the quantity per student group, and the warranty. Any figure quoted is confirmed in writing on the quotation; ask for its basis.

Related ranges on this site

Thermometers for every experiment on this page, with the immersion-depth and tolerance questions, are under Thermometers. Pressure instruments are under Fluid Mechanics Physics Equipments, weighing under Lab Balances and Scales, and the flywheel and friction work connects to Mechanics Physics Lab. Radiation and the radiometer sit alongside Optics Physics Lab. Parent range: Physics Lab Equipments.

Request a quote

Say whether you want the engines as working units or as sectioned display models, because that changes the specification, the price and what your room must provide. For example 4 Stroke Petrol Engine (RE-0007) as a cutaway with a timing diagram, one off, plus Calorimeter Set Copper (RE-0021) for eight groups with the lid, stirrer and thermometer-hole diameter stated in writing. Contact Ray Export for prices, dimensions and lead times.

Frequently asked questions

Are the engine models working engines or cutaways, and why does it matter?

Ask this of RE-0001 to RE-0012 in writing, because the answers lead to different purchases. A sectioned display model teaches construction, the four phases of the cycle and valve timing, needs only a bench, and is worth its price if it is motorised to turn slowly, lets the class follow valve and ignition timing, and comes with a timing diagram and labelled cross-section. A working engine produces carbon monoxide and must run outdoors or with exhaust ducted outside, needs a flammable-liquids or gas cylinder store, guarding over flywheel and belts, an accessible stop, and hearing protection.

What should we ask about the steam engine with boilers, RE-0011?

More than anything else on the page, because a fired boiler is a pressure vessel. Ask the working pressure and test pressure, whether a safety valve is fitted and at what setting, whether a pressure gauge and a water-level sight glass are visible from the operating position, and how the boiler is heated, since electric heating differs from methylated spirit or solid fuel. Ask your own authority whether a boiler of this size needs inspection or registration. Put three rules on the practical sheet: never run below minimum water level, never block or adjust the safety valve, and staff operate it, not students.

What makes a calorimeter give a good result?

Control of the heat you cannot see leaving. Eight codes here are calorimeters distinguished only by material, so ask whether each is lagged with an outer jacket, since a bare metal cup loses heat fast enough to swamp the measurement; whether its mass and material are stamped on it, because the calculation needs both; and whether a lid with a stirrer and thermometer hole is included, and that hole's diameter, which must match the thermometers you own. For the continuous-flow calorimeter RE-0032, ask what provides steady flow, whether RE-0030 is its companion, and whether two matched thermometers are supplied.

What else do the expansion and conductivity experiments need?

Usually something not in the quotation. Linear expansion is read as a very small movement, so ask whether it is read by spherometer, micrometer screw or dial gauge and whether that gauge is supplied, and ask what heats the rod, since most of these experiments assume a steam supply and a steam generator is rarely included. For the conductivity apparatus RE-0029, ask which metals are supplied and whether the rods are identical in length and cross-section, because the comparison is meaningless otherwise. For the gas-law apparatus RE-0026 and RE-0031, ask how pressure is read and whether a mercury-free arrangement is available.

Which items on the heat bench carry their own hazards?

Four groups. The ether thermoscope RE-0039 may contain ether, which is extremely flammable with a very low flash point and degrades in storage, so ask what it contains, request the safety data sheet and ask for a less hazardous filling. The bar-breaking apparatus RE-0018 snaps a metal bar by thermal contraction and the pieces leave at speed, so ask about a shield, use eye protection and keep the class back. Heated metal in the ball-and-ring and compound-strip experiments stays hot long after it stops glowing, so ask for tongs and plan cooling time. Crookes radiometers and evacuated glassware fail suddenly, so wear eye protection.

Why should we quote codes rather than names from this listing?

Because several names are unreliable. Eleven names are in capitals with a boilerplate suffix, one carries a hyphenated web address where its name should be, one code is written without its hyphen so it does not sort with the rest, RE-0008 is absent from the sequence, three calorimeter entries and four expansion entries overlap, and several names have lost the apostrophe from the scientist they are named after. When you ask for a quotation, give the code, say whether you want each engine working or sectioned, and state quantities per student group, with dimensions, materials and masses confirmed in writing.

Key takeaways

• Running or display: confirm this for every engine code, because exhaust, fuel, guarding and noise all follow from it.
• Exhaust goes outside: a running engine is never run in a closed teaching room or on the strength of an open window.
• RE-0011 is a pressure vessel: staff operate it, the safety valve is never touched, and the water never drops below minimum.
• Calorimeters need lagging and a stamped mass: a bare cup or an unmarked mass undermines the specific heat calculation.
• Steam is rarely included: most expansion experiments assume a steam supply, so ask for a generator if you need one.
• Ask for mercury-free gas-law options: check how pressure is read on RE-0026 and RE-0031 before ordering.

About this page

Ray Export is a manufacturer and exporter of laboratory, scientific and educational equipment based at Plot No. 449, HSIIDC Industrial Area, Saha, Ambala, Haryana 133104, India. Enquiries: [email protected], +91-9817319615.

Written by Palak Mall, Senior Content Writer. Technically reviewed by Arvind Kumar, Lab Equipment Specialist, 12+ years in laboratory and testing instrumentation. Last updated: 17 October 2026.

Specifications for RE-0001 to RE-0046, including whether each engine runs, the boiler's working and test pressures and safety valve setting, calorimeter mass and material, and gauge resolution, are confirmed in writing on the quotation. For boiler or other documents, contact us for the latest copies of the relevant certificates. No price is quoted on this page. Listing note: eleven names are in capitals with a boilerplate suffix, one has a hyphenated web address in place of a name, one code is written without its hyphen, RE-0008 is absent from the sequence, three calorimeter and four expansion entries overlap, several scientists' names have lost their apostrophes, and engine models are filed together with the heat physics bench.