Heavy duty, both ball and ring are mounted on separate handles.
When cool, the 25 mm brass ball passes easily through the matching brass ring; when hot, it won't go through.
Demonstration Apparatus for Illustration of Thermoexpansion.
A 12 V Halogen bulb is fitted below the bi-metallic strip.
When heated the strip bends upward and breaks the circuit.
Jolly's thermometer bulb connected via a 3-way stopcock to mercury tube.
Sliding indicator on right hand limb with reservoir sliding on vertical clamping rod.
Metal vessel to surround the bulb.
Mounted on wooden stand, height 740 mm.
All glass parts except reservoir are made of borosilicate glass.
Copper calorimeter 75 x 50 mm with felt insulation, outer vessel of 100 x 65 mm size with a plastic lid having holes for thermometer and stirrer.
A thermometer holder is fixed to the outer vessel. Complete with stirrer.
A 500 mm long metal rod is supported in a plated brass tube with three tubules for steam inlet, outlet and thermometer.
The tube is mounted on a stand with an adjusting screw at one end and a micrometer screw reading to 0.01 mm on the other, with terminals for connecting a bell or galvanometer to indicate contact.
With copper, brass and iron test rods but without thermometer.
To determine the co-efficient of absolute expansion of mercury.
Glass tubes with vertical limbs contained within glass jackets approx.
460 x 25 mm height x diameter are closed by bungs and fitted with inlet and outlet tubes.
Upper ends of these vertical limbs are angled on emergence from the jackets to produce two short, adjacent limbs placed against a silvered glass scale 0 to 12 cm x 1 mm.
Mounted on stand 610 x 230 mm, height x width.
Overall height 750 mm approx.
supplied without mercury.
To determine co-efficient of expansion of a gas at constant pressure.
A glass U-tube with a bulb and stopcock at one end, the other limb being open.
An outlet tube from the bottom of the U tube passes through a rubber bung and has a stopcock at the end.
The stem below the bulb is graduated 3 x 0.1 ml. An inlet tube with a mohr clip also passes through the bung.
A glass water jacket encloses the U tube.
All glass parts made of borosilicate glass requires only 20 ml mercury, which is not included.
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