WHEATSTONE BRIDGE Mounted on a polished wooden base four gap system, enabling two additional resistance to be interpolated in the additional gaps, enables greater accuracy of measurement by reducing unwanted resistance to a minimum. Two brass strips are provided to close the gaps when so required. Complete with knife edge jockey.
TICKER TAPE TIMER-A.C with spring loaded armature which vibrates above a support table for a carbon paper disc. Paper tape, drawn through guides on the table, is struck by a dotting screw carried on the armature. The peg on the support table is movable to allow maximum use of carbon paper discs. The ticker tape timer produces dots spaced at 150 or 160s intervals depending on main frequency. Operates on 12 V a.c. with Power supply and paper roll.
KELVIN BRIDGE Fitted in elegantly polished wooden case for precision measurement of low resistance, range 10 to 1 ohm. With a rotary dial having ten coils of 0.1 ohm each and a circular slide wire resistance reading in steps of 0.001 ohm. A multiplier of 0.1 enables readings upto 0.0001 ohm. Separate current and potential terminals are provided. Properly aged manganin coils are used. Accuracy +0.1% or +0.2% of the slide wire length whichever is greater.
GOLD LEAF ELECTROSCOPE A metal case with 4 mm earthing socket with glass window. A metal disc passes through an insulating polythene bush and ends in a flat support for gold leaf with a transparent scale to show quantum of deflection.
Rishi(Lotus Overseas & Marketing)
91, Durand Road. Ambala Cantt 133001, Haryana, India
Share us via 
Write a Review
