Compound Bar

Description

Consisting of a joint less copper calorimeter 75 x 50 mm on rubber supports, spun outer copper vessel of 100 x 75 mm diameter copper lid for outer vessel with central tubule for thermometer and slit for copper stirrer with a looped copper stirrer for the inner vessel.

Description

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.

Description

Two cast metal uprights, height 18 cm, fitted with two nickel plated rods supporting expansion bar of length 38 cm. Expansion bar is fixed to one upright and moves a pointer on the other, when heated With scale reading 0 to 90°, supplied with one each, aluminium, brass and iron expansion bars. Comprising two cast­metal uprights linked by a pair of parallel plated metal support rods and supporting an expansion bar at the top. Supplied with expansion bars. Comprising two cast-iron uprights, height 18 cm linked by two nickel plated rods supporting on expansion bar, length 38 cm fixed to one upright and resting on a friction pointer placed at the other. Supplied with scale reading 0 to 90 deg and one each of aluminium, brass and iron expansion bars.

Description

Copper calorimeter of 75 x 50 mm resting on felt pad inside wooden polished box provided with a brass nickel plated thermometer holder and copper stirrer.