519/ED IMMERSION HEATER 12V, 50 W. to fit into aluminium block. 12x60 mm, (dia x length). Overall length 150 mm. Supplied with approx.  1.5 meter long lead.

521/EL INGEN - HAUZ APPARATUS Made of stout galvanized iron sheet, with rods

523/ED RING AND BALL: Gravesands Brass ball with handle and chain, Dia of ball (mm) : a) 18 b) 25.

525/ED RING AND BALL:  On stand Brass ball 25 mm dia is suspended from a rod, on a tripod stand.

527/EL RODS FOR THERMAL CONDUCTIVITY EXPERIMENT Size : 30 cm length x 0.3 cm diaConsists of: A) Iron  B) Copper C) Aluminium

529/ED SPECIFIC HEAT CYLINDERS Set of 6 cylinders of different metals, brass, copper, iron, aluminium, lead and zinc, of same mass 100 gms, same dia but different lengths, with holes for suspension. A wooden box is provided for storing the cylinders.

531/ED THERMAL CONDUCTIVITY APPARATUS (SEARLE'S) Consists of copper rod 30 x 2.5 cm dia with its one end surrounded with steam jacket for heating from boiler and other end is kept cool by steam of water flowing through out a spiral tube fitted on teak wood case without thermometer and boiler.

533/ED THERMAL CONDUCTIVITY OF METALS APPARATUS Comprising of Bars of copper, Iron, Aluminium and Brass with nominal thermal conductivities respectively. Each 80 x 20 x 1.5 mm provided with hollow for wax, and mounted on wooden ring. Outside diameter 130 mm. Inside Diameter 80 mm.

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