For conducting experiments of solid and liquid density with hollow metal flotation body, upper loading pan and weighted lower loading pan brass chrome plated

A direct reading relative density hydrometer of stream lined from with parallel bulb. All glasses overall length 370mm approx.

The apparatus has a stable iron base 45x15 cm hinged to wooden strips 48x6cm separated by about 2cm rigidly jointed at ends by metal cross pieces on the upper surface which serve at stops for the carriage, Aluminum pulley 5cm diameter well balanced, is attached to a clamp passing through an extension of one side of the plane The pulley is adjustable at any angle and is inline with the centre of the gap divided the parts of the plane. A San Aluminum centimeter scale is fixed to the edge of the plane and a combined. Angular and liner scale is screwed to the base with a positive clamp. This also serves as an index

Consisting of primary coil of insulated copper wire wound upon cylinder with terminals, secondary coil wound upon cylinder in to which primary fits. A soft iron core fits the cylinder of the primary. Complete with terminals.

These coils are built with high insulation between the sections of the secondary and with a very reliable circuit breaker fitted with silver contacts. The condenser is fitted within the base. Separate terminals for primary and secondary coils are given. The sparking needless is provided with insulated handles. These units are also fitted with reversing Switches.
Spark in mms.
a) 5mm without reversing switch
b) 10mm
c) 15mm
d) 20mm
e) 25mm with reversing switch
f) 50mm
g) 100mm

A class demonstration kit for comparison of masses and to aid understanding of the terms ‘Mass and ‘Weight A platform is supported on spring steel strips, which is made to oscillate in the horizontal plane under various loads. Two aluminum trays 130x50mm, held approximately200mm apart on spring steel strips attached to their sides. One tray has holes to take three equal mass cylinders, approximately 100x25mm, length x diameter, Three support pins to fit radial holes in cylinders.

Made of stout tin sheet, nicely painted with handle and 5 rods of different metals

It consists of a polished Aluminum calorimeter (100x75mm) placed in an outer wooden case. Fitted with Bakelite top with hole for thermometer. Two terminals connected to a heating coil (For current up to 2Amp) are fitted complete with stirrer but without thermometer.

Used for making or breaking one, two, three or all the four circuits at a time.

Plug one –way two-brass block fitted on a Bakelite base and one tapered plug is providing to make contact. Two terminals are also provided on the brass block for out-put

Plug two ways, two –brass lock fitted on a Bakelite base. And one tapered plug is provided to make contact. Two terminals are also provided on the brass block for output.

Plug three ways, two brasses Block fitted on a Bakelite base and one tapered plug is provided to make contact. Two terminals are also provided on the brass block for output

Single Pole, double throw, ob Bakelite base approximately 100x15mm, for panel mounting

Double pole, double throw. On Bakelite base approximately 100x38mm for panel mounting

Spherical optically worked highly polished and ground edges. Diameter 38mm
Focal Length 5,10,15,20,25,30,50 and 100Cm
Diameter 50mm
Focal Length 5, 10, 15, 20,25,30,50, and 100 cm
Diameter 75mm
Focal length 10,15,20,25 30, 50 and 100Cm
Diameter 100mm
Focal Length 10.15, 20, 25, 30.40,50 and 100cm

Spherical optically worked highly polished and ground edges. Diameter 38mm
Focal Length 5,10,15,20,25,30,50 and 100Cm
Diameter 50mm
Focal Length 5, 10, 15, 20,25,30,50, and 100 cm
Diameter 75mm
Focal length 10,15,20,25 30, 50 and 100Cm
Diameter 100mm
Focal Length 10.15, 20, 25, 30.40,50 and 100cm

Mounted base, with V slot to hold lenses up to 80mm diameter, made of wooden, nicely polished

Diameter 38mm and 50mm with ground and polished edges and faces, comprises of 1 each of the follows double convex. Plano convex, converging concave convex , double concave , Plano concave , Diverging concave convex supplied in velvet lined case.

Comprises a tin plated box with approximate 120mm sides. The vertical faces of the box are black end dull, white and bright tin, the instruments is used for experiments of showing that different surfaces radiate heat of differentiates.

With removable internal and external coatings, maximum Height diameter 10x7cm, Inner metal coating in the from of inverted cup to which a rod is fixed.

Same as above but mounted on a nicely polished wooden stand without tank

Used to demonstrate the pressure of atmosphere Made of Brass fitted with stopcock and handle

With Keepers, Powerful and polished. Size 50mm, 75mm and 100mm

With keepers strong length 2.5cm, 7.5cm, 100cm