1752. Copper calorimeter.
Spun in one piece 4" X 3" (10x7.5 cms.) 3" x 2" (7.5x5 cms.)

1753. Copper Calorimeter.
In case 3" x 2" (7.5x 5cms.) complete with outer rectangular teak wood polished box, thermometer holder and copper stirrer.

1754. Joule's or Electrical Calorimeter .
4" x 3", consisting of a silver plated copper vessel with outer vessel of teak wood fitted with ebonite top with hole for thermometer. The terminal connected to a coil of wire (for current-upto 3 amps) are fitted, complete with stirrer and outer teak wood vessel.

1755. Joule's or Electrical calorimeter
As above but Calorimeter of 3" x 2" size.

1756. Steam Boiler
Made of brass sheet with jointless bottom. The boiler is fitted with inlet and outlet tubes.
Capacity 1, 2 & 3 litres

1757. Steam Boiler,
Made of copper sheet, fitted with inlet and outlet tubes and water gauge.
Capacity 1, 2, 3 & 4 litres

1758. Steam Boiler,
As above but with jointless bottom
Capacity 1, 2 & 3 litres

1759. Radiometer Crook's
Vanes rotate when placed in sunlight.

1759. b) Radiometer Crook's
Double with two sets of vanes revolving in opposite direction.

Steam Engines and Gas Engines

1760. Gas Engine Model,
A demontration model of a four cycle, one cylinder gas Engine showing all the essential operations including intake, compression, explosion, exhaust, advanced and retarded spark etc. A miniature lamp is used in place of spark plug.

cylinder gas Engine showing all the essential operations including intake, compression, explosion, exhaust, advanced and retarded spark etc. A miniature lamp is used in place of spark plug.

1765. Steam Engine Vertical Pattern,
With oscillating cylinder, safety valve and whistle mounted on metal base with spirit lamp without wick.

1766. Demonstration Steam Engine Model Sectional
Locomotive design, showing cross section of the piston and side valve method of turning steam on and off. All parts such as crank- shaft, valve control, drive wheel etc. clearly visible through glass front movement light enough to demonstrate working even by blowing. All brass parts are N.P. mounted on heavy base.

crank- shaft, valve control, drive wheel etc. clearly visible through glass front movement light enough to demonstrate working even by blowing. All brass parts are N.P. mounted on heavy base.

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