Reply With Quotewhat's it look like inside?
Master
I bought this old meter at a car boot sale in the UK a few years ago. Looks kinda military to me (but maybe not?), I've never known exactly what it's used for measuring. The needle swings around freely.
Any ideas?
Jon
R.I.P.
what's it look like inside?
RoverLord
It is a test meter for electric detonator circuits. Probably designed for use in mines or quarries. It will be designed so that it is impossible to provide anywhere near enough enough current to fire a detonator, and probably also has some degree of tamper proofing.
John
John
JDNSW
1986 110 County 3.9 diesel
1970 2a 109 2.25 petrol
Moderator
I obviously am having a slow lunchtime so I googled "detector Q & I" and this came up:
"Hi. Just found your virtual museum whilst searching for wartime electronic equipment. I believe the 1940 Wheatstone bridge is a "Coil, resistance, 200-ohms" used by the Royal Engineers to test the integrity of electric demolition firing circuits and to check that dynamo exploders were generating sufficient power. It was one of three components included in a demolitions testing kit, the "Box, testing and jointing". I have another item from the same kit which is the "Detector Q & I Mk.1", a form of galvanometer. The third component was a battery (cell) contained in a wooden box. Different tests could be performed by hooking up the 3 components in various combinations. There is a description of the device and a couple of diagrams in the war office 1942 booklet "Military Engineering: Demolitions".
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Mahn England
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Master
Just took this picture:Originally Posted by kaa45
Jon
Wizard
SupporterOH NO! You opened it, looks like you just voided the waranteeJust took this picture:
Jon
from 1942
1995 Defender 110 300TDI :D
1954 86" Series 1 Automatic :eek:
Ex '66 109" flat deck, '82 109" 3 door, '89 110 CSW V8, '74 Range Rover, '66 88" soft top, '78 88" soft top, '95 Disco ES V8, '88 Surf, '90 Surf, '84 V8 Surf, '91 Vitara.
How do you know the bloke who sold it to you didn't sell a dud meter?I bought this old meter at a car boot sale in the UK a few years ago. Looks kinda military to me (but maybe not?), I've never known exactly what it's used for measuring. The needle swings around freely.
Any ideas?
NextContinue
Jon
If I were you, I'd connect 2 sticks of gelly to it and crank the knob to make sure it works, if it doesn't damand your money back
Super Moderator
Good to see I m not the only smart a**e on this forum, or the smartest
RoverLord
you know something that well made is probabley still covered under its original real lifetime warrenteeOH NO! You opened it, looks like you just voided the warantee
from 1942
Dave
"In a Landrover the other vehicle is your crumple zone."
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Wizard
SupporterGiven what is for, the lifetime of the user may be rather short
1995 Defender 110 300TDI :D
1954 86" Series 1 Automatic :eek:
Ex '66 109" flat deck, '82 109" 3 door, '89 110 CSW V8, '74 Range Rover, '66 88" soft top, '78 88" soft top, '95 Disco ES V8, '88 Surf, '90 Surf, '84 V8 Surf, '91 Vitara.
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