225/GA
PLUGS : BANANAa) 4mm, metal plug. Red or black plastic top.
b) Stackable 4 mm red or black.
226/ED POST OFFICE BOXPlug Type - With ratio arms of ranges 10, 100, 1000 ohms and resistance arm of range 1 - 5000 ohms. With tap keys for battery and galvanometer. Plug type.
a) `A' Grade with silver contact points. Accuracy .05%.
b) `B' Grade with accuracy ,1%.
227/ED POTENTIOMETEROn plywood board with laminated top and jockey.
228/ED RESISTANCE BOX PLUG TYPEIn seasoned, polished wooden case. Milled head plugs, accurately tapered, are interchangeable. Grooved bakelite
tops of the plugs give firm grip. Metal blocks are undercut and are fitted to thick, high insulation plates. Manganin coils, well-seasoned, non-inductively wound, accurately calibrated. Accuracy 0.05% for A grade and 0.1% for B grade.
| Range (Ohms) | No.of Plugs | Total Res.(ohms) |
| a) 0.01-0.5 | 9 | 1.1 |
| b) 0.1-1.0 | 6 | 2.0 |
| c) 0.1-5.0 | 9 | 11.0 |
| d) 1-100 | 10 | 210.0 |
| e) 1-500 | 13 | 1110.0 |
| f) 1-1000 | 14 | 2110.0 |
| g) 1-5000 | 17 | 11110.0 |
A) coils of different resistance
B) With socket terminals,
different resistance.
230/ED RHEOSTATSConsisting of a layer of superior quality oxidised eureka wire wound on an insulating heat-resistant porcelain tube
which is supported at both ends by cast iron, enamel painted, stain-finish feet. A bakelite sliding contact with laminated phosphor-bronze strips is provided. Three 4 mm socket terminals with captive heads are provided. Each rheostat tested for current carrying capacity. Special feature of our rheostats is that they are manufactured for continuous use without overheating. Tolerance in nominal marked value of resistance is- 5% and + 20%. Given below are a few representative ranges only.
WE MANUFACTURE ALL RANGES AS PER BUYER'S SPECIFICATION.
| Amps. | Ohms | Amps | Ohms | Amps | Ohms | |||
| a) | 0.3 | 2850 | g) | 1.2 | 225 | m) | 3.3 | 27 |
| b) | 0.4 | 1625 | h) | 1.4 | 160 | n) | 4.2 | 20 |
| c) | 0.5 | 1000 | i) | 1.6 | 125 | o) | 5.0 | 11 |
| d) | 0.6 | 670 | j) | 1.8 | 92 | p) | 6.5 | 7.5 |
| e) | 0.8 | 400 | k) | 2.3 | 57 | q) | 8 | 4.5 |
| f) | 1.0 | 290 | l) | 2.8 | 37 | r) | 10 | 2.8 |
231/SP SMOKE CELLRectangular with cover