ZES 280. Potentiometer 1 Wire :

Slide wire pattern with 1 wire 1 meter long, mounted on a polished wooden base with boxwood rule graduated 0-100 cm. X 1 mm with two socket type 4 mm. Terminals to enable the apparatus to be used as a 1 meter or 2 meter instrument with sliding type jockey.

ZES 281. Potentiometer 4 Wire :

Mounted on a polished wooden base, with four wires of 24 swg constantan wire connected in series to give effective length of 4 meter, with plated brass strips and box wood rule graduated 0-100 cm. X 1 mm. Provided with two terminals. With jockey having knife edge, press keys type giving accurate contacts and a terminal for connection.

ZES 282. Potentiometer 10 Wire with Pencil Jockey :

On polish laminated 18mm. thick wooden board with teak wood colour sunmica having 0 to 10 wires of swg. 24 connected in series, clamped under heavy brass strips & fitted by screws in such a manner so as to be easily replaceable to have negligible END ERRORS. Supplied with pencil jockey & lead for connection.

ZES 283. Potentiometer 10 Wire with Spring Type Press Jockey :

Pencil jockey is replaced by heavy brass NP spring type sliding jockey. Jokey slides on the metal rod within due mark for scale reading. Jockey is having 10 sharp pencils, spring loaded contacts are given separately. The sliding contact key makes spring contact at any desired position. The design of jockey permits high accuracy of reading and convenient position setting. The said potentiometer is also supplied with pulley arrangement system to tight the wires. The L shape end connectors are given on the strips which adjust both the ends for faulty 0 and end setting.

ZES 284. Jockey Knife Edge/ Pencil :

For wheatstone bridge and potentiometer work. Metal knife edge mounted in plastic handle. 90mm. Long x 12 mm. dia with terminal at the upper end.

ZES 285. Potentiometer, Linear :

Mounted on a transparent plastic base 90x90x30mm. High together with three colour coded 4 mm. Sockets.

Type

Resistance

(a)

100 ohms

(b)

1K ohms

(c)

5K ohms

(d)

10K ohms

100K ohms

ZES 286. Crompton Potentiometer :

Eight steps of 2 ohms and a slide wire of equal resistance enclosed, circular type, divided into 200 parts and calibrated to read milli-volts, all in series and with coarse and fine rheostat provide the standardizing unit. Terminals are provided for standard cell, galvanometer and two volt batteries and 2 sets of external test circuits, worked by a rotary switch. A self check is provided by a fixed tap in the circuit corresponding to the standard cell E.M.F. 1.0186 at room temperature on turning a knob of the standardise test switch to the standard position. Standard cell is got into circuit without alteration to the test circuit. Range of measurement 0.0005 to 1.8 volts. Accuracy 0.05%.

ZES 287. Potentiometer Dial Pattern :