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Showing 217–228 of 470 results
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JOLLY AIR BULB
★★★★★In above a Jolly Air Thermometer bulb 50mm dia is mounted on a wooden frame which can be fixed at three places, up, middle and down on the stand and enable the apparatus to be used as Jolly's Apparatus. -

JOULE’S CALORIMETER
★★★★★For determining of specific heat capacity of liquid by electrical method. Consisting of a nickel plated copper vessel 75 x 50mm size with outer vessel of teakwood fitted with Bakelite top with hole for thermometer. The terminals connected to a coil of wire (for current upto 3 amps) are fitted. Complete with stirrer and outer teakwood vessel but w/0 thermometer. -

KATER PENDULUM
★★★★★A Stainless steel rod 1200mm long, 10mm dia, with one pair each of smalland large brass and ebonite masses, two steel knife edges set in adjustable metal holders anda metal bracket with holes for wall mounting. -

KINETIC THEORY MODEL
★★★★★The apparatus consists of a clear perspex tube 250mm long x 50mm outside diameter provided with a light, freely sliding expanded polystyrene piston and a loose fitting metal cap. -

LAMP UNIT, TRIPLE
★★★★★Three lamp holders are connected in parallel. Supplied complete with three lamps 1.25V0.25AM.E.S. -

LAMP, 240V
★★★★★A 240V 15W white B.C. Pygmy lamp in a conical lamphouse 70mm long x 65mm dia. Mounted on a 6mm brass rod giving an optical centre height of 80mm approx. Supplied complete with 1.5mm of twin flex. -

LARGE MOTOR /GENERATOR
★★★★★For use as a driving unit or dynamo. Comprises a 2 to 6V DC. Motoг provided with a 15mm diameter V pulley. -

LATENT HEAT OF STEAМ АРРАRATUS
★★★★★Comprising a thick brass calorimeter, a bung with steam inlet and outlet glass tubes, a felt cover. Complete with 2 litre tin plate boiler with bung to take the steam tube which connects to the calorimeter. -

LEE’S THERMAL CONDUCTIVITY APPARATUS
★★★★★For determining the relative conductivity of bad conductor material consists of cylindrical slab of brass 11.5cms. In dia and 12mm thick drilled to take thermometer. On this rests a 5cms deep steam chest of the same dia, with inlet and outlet tubes of steam. The apparatus is suspended by strings attached to the lower cylinder with thermometer. On retort stand with rectangular base 200 x 125mm, and rod 600mm long. Complete with one each disc specimens, glass and plastic 3mm and 1.5mm thick respectively, for determining the conductivity of liquids. -

LENS HOLDER
★★★★★Comprising a metal holder with sides grooved to hold the lens or mirror. The holder is finished in Matt black and is free standing for bench use, to hold lens 50mm diameter. -

LENS HOLDER WOODEN
★★★★★To take lenses and Mirror upto 75mm dia, comprising a wooden upright 100mm high, with a V shaped slot to hold convex or concave lenses or mirrors mounted on a rectangular wooden base 100 x 50mm. -

LENS TISSUE
★★★★★Wallets of 25 sheets, 150x100mm.