Physics Instruments

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With 100mm dial graduated 28 to 31 inch of mercury and 960 to 1060 mill bars. With plated bezel, cover transparent and index 16cm dia approx.

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With strong spring and clamping screw for wires. The shank will accept 4 mm plugs.

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It consists of a brass beam 9mm square, one meter long, resting on the knife edges of two heavy table clamps. A sharp knife edge with hanger rest on the beam. Two tilting type mirrors (like optical lever) are also provided for this apparatus but w/o weights

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Consisting of two G. clamps with knife top. Comprising a metal powdered coated bar of 100cm length having width 2Smm and thickness 4.Smm. Sharp knife edge with hanger is also provided which moves on the metal bar. A spherometer fitted on a cast iron stand (specially designed for this apparatus) with electric contacts is also provided, supplied w/o weights.

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Consists of the following apparatus

a)Bi-prism Holder  : has the fine radial motion by a fine pitch screw
b) Auto Action /Lens Holder: with automatic spring action of equal opening and closing of both sides
c)Micrometer Eyepiece:  Ramsden Eyepiece, 10x is carried on a slider which moves along   a micrometer screw. Accurately made.
d)Optical Slit: Optically true, precision ground stainless jaws, spring action for opening of jaws eliminated to ensure original accuracy even after prolonged use. jaws open uniformly all along through a milled head. jaw alignment tested for optical accuracy. Made for a lifetime of trouble free use.
e)Condensing Lens: This lens is supplied with mount to condense the monochromatic sodium light

Same as Cat. No. 1038 E but diameter of aluminum disc 25cm (larger size) and another smaller disc of iron c.p. has diameter of 10.5 cm and thickness 1.25 cm.

Consists of an aluminum disc 25 cm diameter. Another small disc of iron c.P. having same diameter as the interior of a grooved area of the bigger disc. (the small disc has approx. 8 cm dia and 1.25 cm thickness) A tall U-Shape metal bridge with a split chuck, fitted into disc enable accurate suspension and torsion. Article of irregular dimension as large as brick can also be inserted in the U-Shaped suspension.

Spare clamp which can be fitted to the wall as well as to the retort stand, useful for torsion pendulum, inertia disc, inertia bar and Maxwell needle etc

The torsion pendulum is an interesting example of simple harmonic motion, often overlooked by students. It is helpful in explaining the meaning of moment of inertia and moment of torsion and how they affect the period of vibration. The one end of suspension wire hangs from a Universal Clamp with the help o~ a chuck nut and the other end is clamped to a solid brass disc of 12.5cm dia and 1.25cm thick with the help of a chuck nut. A heavy metal ring of the same metal (brass) and the same outside diameter as the disc is included. When ring is placed on the disc, the moment of inertia, and therefore the period of vibration of the system, is increased. Supplied with universal clamp of Cat. No. 1038 A

Same as Cat. No. 1038 B but with length of rod approximately 1100 mm.

Two cast iron feets each with 3 through holes and grub securing screws, separating by two support rods approx 600mm long, one of which is graduated in cm and mm. The wheel 165mm dia. over groove moving on ball bearings is provided with chuck to hold the test rod of 55cm long and 5mm dia with two aluminum scales graduated 30-0-30 in single degrees, mounted on pillar support, which are adjustable along the rod, two pointers with clamp for attaching to specimen, on each of brass and steel rods, cord and hook for carrying masses. Supplied without weights.