For demonstrating the expansion or contraction of metals. Consists of two brass rods with insulated handles. One of the rods has a ring and the other one has a ball of approximate diameter 25mm, attached at the end. The brass ball passes through the ring when both are at room temperature, but when the ball is heated it expands and can not pass through the ring.

For the qualitative study of expansion of liquids, the principles of thermometry, and the rise and fall of a liquid column due to expansion or contraction of air in a bulb. Consists of a borosilicate glass bulb of diameter approximately 50mm with a 30cm long stem of 5mm bore.

To demonstrate unequal expansion in different metals on heating. Highlights the role of temperature and materials in practical applications such as in thermostats. Consists of a laminated strip of two different metals fitted in a wooden handle. The strip is about (l x w), 200 x 10mm. Due to differences in the co-efficients of linear expansion of both metals, the laminated strip bends dramatically on heating.

This glass alcohol filled thermometer is recommended for laboratory use, educational use and general science experiments. Black numbering on a white background and red alcohol indicator make this thermometer easy to read. Alcohol thermometers are environmentally safe for use at home or school.

Use Thermo Fountain to demonstrate the effect of heat on expanding gases and how heat can convert to mechanical energy and push the liquid from the lower container to the upper container.

For melting point determination using convection stirred liquid for heating. Made of borosilicate glass tube with a side loop-forming tube. Two sizes are available.

VEE GEE Brand Dial Thermometers are an excellent choice for many applications including food & beverage quality control, general lab use, asphalt/concrete testing, and soil & compost testing. The dial thermometer is great for determining development and agitation times in film processing as well as heating and refrigeration applications, and aqua culture.

For classroom or outdoor use. Spirit-filled glass thermometer mounted on a rust-proof aluminum plate with dual scale -20° to 230°F x 1°F and -30°to 110°C x 1°C division. Approximately (l x w),165 x 25mm. Pack of five.

This thermocouple is a very simple and effective way to demonstrate the production of thermoelectric E.M.F.. When two wires of different metals joined at one end the other end is cool, electric charge flows through them.

For laboratory use as a variable series resistance or as a potentiometer. Can control current and voltage. Made from heat resistant, air cooled, hollow porcelain tube closely wound with a resistance wire of copper nickel alloy which is previously oxidised to provide perfect insulation. The end supports are made of metal with provision for screw mounting. A bakelite slider carries a phosphor bronze contact which can be moved rapidly and smoothly and can rest anywhere along the winding. The insulation is sand-papered off where the slider makes contact. Resistance in ohms and current carrying capacities are engraved on contact carriage. Three terminals are provided for electrical connections, one at each end of the winding and the third at one end of the slide rod so that the unit can be used either as a rheostat or as a potentiometer. Available with a variety of resistances and current carrying capacities. Power ratings (watts) can be calculated as Watts = (Current in amperes)2 x Resistance in ohms. Caution: Rheostat of unprotected design should not be used on electric supplies more than 50 volts.

Glass thermometers are highly suitable for general lab use, schools, and testing. They are available with white or yellow baking. Weight 20g. 305mm (12") long. Partial immersion.

Glass thermometer, with red alcohol, graduated from -20ºC to 110ºC for total immersion, 300mm Long. Horizontally graduated, and nitrogen topped.

Glass thermometer, with red alcohol, graduated from -20ºC to 110ºC for total immersion, student grade.

This glass alcohol filled thermometer is recommended for laboratory use, educational use and general science experiments. Black numbering on a white background and red alcohol indicator make this thermometer easy to read. Alcohol thermometers are environmentally safe for use at home or school.

Compound bar is used to demonstrate unequal expansion in different material on heating. Highlights the role of temperature and materials in practical applications such as in thermostats. 

This is a digital thermometer with large LCD, Folding design, memory records and stainless steel probe.
Measuring Range: -50ºC to 125ºC (-58ºF to 257ºF)
Resolution: 0.1ºC or 0.1ºF
Accuracy: ±1ºC or ±2ºF (at 0.0ºC ~ 80ºC)
Frequency: 2 or 10 seconds
Power Supply: 1.5V (AG13)
Dimemsions: 155 x 48 x 22 mm

Ball and ring are used to demonstrate the thermal expansion and contraction of metals when heated and cooled.

VEE GEE Brand Dial Thermometer are an excellent choice for many applications including food & beverage quality control, general lab use, asphalt/concrete testing, heating and refrigeration applications, aqua culture, soil & compost testing.