Two piece apparatus for demonstrating thermal expansion.
Ball diameter: 22 mm
Consists of a brass ball and a brass ring, each individually mounted on brass rods with wooden handles.

Comprising a bar of iron mounted on a support rod with wooden handle, and a brass gauge with a cut-out which barely admits the bar lengthways while cold, and a hole which passes the bar endways only while cold. 
Heating the bar and then comparing it to the gauge provides an excellent visual demonstration of thermal expansion.
For illustrating expansion by heating and contraction by cooling. 

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1 x C Battery Holder
Type : Battery holder
Battery Size : C
Length : 58mm Width : 29mm
Number of Cells : 1
Terminal Type : Tag

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A versatile unit for demonstrating the properties of a vacuum. 
Use with hand pump or ideally with electric vacuum pump.
Comprises a sturdy baseplate with tap, glass bell jar and detachable battery operated bell. 

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Comprises a 200 x 15mm strip of brass and steel rivetted together with heat resistant rivets and mounted in a well-finished wooden handle.
For demonstrating the differential expansion of two metals by the curvature produced when the strip is heated in a flame. 

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This is a simple brass unit, suitable for class demonstration or individual use. 
The cylinder has a suspension hook at one end.
The bucket has a suspension loop at the top and a hook at the bottom. 
For demonstrating Archimedes' principle. 

Technical Specifications :
60mm, overall 160mm

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An LCD Digital Caliper with a measurement capacity of 100mm (4in.).
Clear LCD display.
Carbon fibre composite construction.
Measurement can be displayed in mm or inches.
1.55V battery powered.

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The unit is a nickel-plated copper calorimeter 75 x 50mm (diameter), lagged and enclosed within an outer vessel 100 x 75mm (diameter). 
A close-fitting ebonite lid is provided with a wire stirrer, and a pair of 4mm socket terminals connected to a Constantan wire heating coil. 
The resistance of the coil is approximately 6? and should be used with a current 0.5A (with a maximum of 1A).
Supplied without thermometer.
For the determination of the specific heat capacity of a liquid by the electrical method. 

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