With iron ball 5 cm dia suspended by steel wire, clamp for altering length of the same with steel knife edge support & bracket for fixing to a self.

Steel C.P.bar 100x3.75cm, bored at equal intevals, provided with removable knife edges & bracket.

Brass C.P.bar 100x2.5 cm, bored at equal intervals, provided with removable khife edges & bracket.

Consists of a steel C.P.rod one meter long, carrying two sets of moveable knife edges, hardwood weights are provided to compensate the air displacement.

Same as above, but all metal parts of brass, richly chromium plated.

For Kater’s Reversible Pendulum, metallic folding, heavy.

A carefully turned brass disc 125mm dia & 12mm thick is provided with a split chuck in the centre. An aluminium ring of dia exactly 125mm has two pins which fit into two cavities in the disc so that the edge of the ring is in flush with the edge of the disc, without stand
A. Superior Quality Brass Plate x Brass Ring
B. Regular Quality Brass Plate x Alu. Ring

Two cords are held in chucks of two rectangular bars. The upper bar can be clamped to a retort stand & the lower carries & adjustable weight. Arrangement is provided for adjusting the cards to same length.

20 cm in dia. & 4.5 cm thick wheel turned true & carefully balanced, mounted horizontal shaft held in ball bearings. The bracket has four holes & can be fixed to the wall also. Without revolution counter regular quality.

brass disc of 150mm dia. & 6 mm thickness with 2 holes for chuck, one in the centre & other along with the edge of the disc.