Triplett 3C V-A-O meter
|This meter was a
present from an old trader on a flea-market. "You like it? Take it along
for free, I have no use for it.". The meter was taken apart by its
former owner and parts are missing. This is a meter that can only
measure DC Volts and resistance. It has a 3 but no 6 Volt range. Not an
interesting instrument for a radio or car repairman. Not for an
electrician either, it has no AC range. Peculiar little black box!
The chances are, it will never function again. But, what the heck? In a collection there is also room for lesser objects.
This is how it came to me. No knobs. I doubt if the sockets are original. All screws are gone. The instrument itself, works, though.
|The interior, instrument face down. Real Triplett resistors!|
|Right side. Two wire-wound precision resistors.|
|Left side. Two wire-wound
Mind the red plastic connector. Fraud!
|Range switch and potentiometer
for Ohm range adjustment.
Again, the replaced connectors.
|The inside of the instrument.
A wire-wound resistor can be seen.
Instrument: 100 uA / 100 mV; Ri = 1000 Ohm.
|Again, front view. A perfectly good working moving coil instrument. And that after half a century or perhaps even longer.|
|The scale. Hey, it came from
Blufton, Ohio! The type number is barely visible.
When observing the print, the difference in fonts attracts ones attention. As if the ranges 0 - 1500 and 0 - 300 were printed later. Different font, different weight, different colour black.
Observe the Ohm scale: sensitivity beyond 500 Ohm is poor.
The damages and smears on the lower part of the scale suggests that the instrument has been opened before and the scale was removed before.
|(C) Photo's and text: 2010 - Van Zwam Computer Support - Velp - The Netherlands - All brands and brandnames are property of their respective owners.|