4mm Pin, 18mm long spring insert and hard plastic body. Overall lenght of plug 40mm.
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Moving coil type. Basic sensitivity of meter is 5mA, 100mV f.s.d. The meters can be used to demonstrate the working principle of AC or DC ammeters or voltmeters with interchangeable dials. Different dials are available. Housed in a Plastic/Wooden case, with plastic in front and rear. a) Wooden case b) Plastic case.
A brass C.P. spring arm with press knob & two brass terminals. All mounted on bakelite base 80 x 55 mm.
Each centre hole coil is wound on a plastic former & is provided with 4 mm socketed terminals.
The coil fits onto a double āCā core, provides a suitable transformer for operation from a low voltage AC supply. In addition, it provides a useful electromagnet if used on one half of a āCā core.
Used in charging & discharging of a capacitor. C.P. brass strips & pillars. Three terminals fitted on a thick bakelite plate of high insulation. Contact resistance 2 milliohms approx. Maximum current 5 amps. Dimensions : 185 x 15 x 45 mm.
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