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1452. RAC Resistance Coils:
in bakelite case with socket Captive head terminal Bobbin non
inductively wound with D S C Constantan Wire Accuracy ± 0.2% |
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1453. RAC Resistance Coil:
in bakelite case Pye Type non inductively wound coil, enclosed in a
bakelite case fitted with terminals Accuracy within ± 0.2% |
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1454. RAC
Resistance Coil in Transparent Case
Non inductively wound on plastic rod enclosed in transparent plastic
tube (Block) with two terminals and values are figured. Accuracy
±0.2 % rating 1 watt. |
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1455. RAC
Potentiometers
a) Warping of wooden base: The base is made from plywood. The
grooves are cut under the lower portion of the base, the base is
covered by Sunmica board which not only beautifies it but olso
avoids warping in extreme climates.
b) Loosening of the wire: The nail system has been replaced by
pulley system in ten wire potentiometer.
c) Faulty zero and end settings: The L-shaped end correctors are
given on the strips which adjust both the ends.
d) The Jockey Strips Are made of thick Brass strip which are Nickel
plated. |
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1456. Potentiometer 10 wire RAC
a) On polished plywood base with White Sunmica Sheet, having 10
wires of SWG 24, Constantan, connected in series stretched round the
pulleys to give effective length of 10 metres with plated strips &
brass terminals and spring type press jockey.
b) Potentiometer 10 wire:
As above with triangular Jockey.
c) potentiometer 10 wire:
Routine quality Pencil Jockey. |
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1457. Potentiometer 6 wire:
a) Deluxe Model with Sunmica top & Spring type Jockey.
b) Potentiometer 6 wire:
with Pencil Jockey. |
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1458. Potentiometer 4 wire:
a) Deluxe with Sunmica top & Spring type press jockey.
b) Potentiometer 4 wire:
With Pencil Jockey. |
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1459. Meter
Bridge or Wheatstone Bridge 2 gap
RAC, 1 metre long made of nicely polished teak wood or plywood,
graduated in mm and cm, stout Brass contact, strip with brass
terminals for Galvanometer, Knife edge Pencil Jockey. |
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