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Double walled, inner chamber of stainless steel, outer made of stove enamelled mild steel. Top has 75 mm holes with concentric rings. Temperature range upto 100°C, accuracy ±1°C, Heater fitted with automatic cut-out device, thermostat, two indicator lights, mains switch. Works on 220-240V, 50 Hz.

Automatic electrically heated. Designed to provide pyrogen free distilled water at low cost. All main parts like boiling chamber, lid, baffle, condenser tube are of stainless still .The heating element has automatic cut- out which cuts current off if water level falls. Easy to clean and reassemble. Complete with wall mounting bracket, electrical cord, connector etc. To work on 240V, 50 Hz

Demonstrating longitudinal and transverse waves. A number of eccentric discs move a number of metal rods. Transverse waves are obtained by straight rods and longitudinal waves by bent rods.

A very effective and motivating learning aid in elementary electromagnetism. Consists of 8 anisotropic alloy magnets, 8 ceramic ferrite magnets, 4 steel magnet yokes, 6 plotting compasses, 4 hardboard formers to take compasses, 1 bottle iron filings 250 gm, 4 dispensers for iron filings , 4 double C-cores, 4 clips for C cores, 4 Aluminium rings, 4 Aluminium split rings, 4 armatures with axle tubes, 4 Aluminium axle rods, 8 split pins, 16 rivets, 4 formers for coils, 4 reels cello tape, 4 reels copper wire, 4 sheets white pasteboard, 4 plain postcards, 4 reels white cotton thread, 1 length latex rubber tubing, 4 each resistors 100 ohms and 10 ohms, 4 support bases, 10 MES bulbs, 8 MES bulb holders,1 wood clamp and 1 wooden block. With instructions.