UnderMiner
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- Minelab Excalibur II, Equinox 800
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Stopped by a local dump today to find a big dumpster full of weird stuff from an old aerospace lab. There was a whole bunch of stuff - metal, wooden, and even leather boxes containing voltmeters, stress sensors, decibel meters, calibration equipment, antennas, etc. Probably over a metric ton of old Cold War lab stuff. I took what I could and left the rest for tomorrow (assuming it will still be there, which it unfortunately may not be).
There was a very short time in history when electronics used these digital displays called "Nixie tubes", this old Multimeter is an example of this forgotten technology, surprised that it still works!:


This little box contains a piezoelectric calibration device - made by GE's Space Division.


This is a old analog multi meter last calibrated in 1952!


This is an electrical resistance tester. You turn the handle and it generates electricity. The level of electrical resistance of whatever you're testing is displayed on the analog display. And yep, it still works!


You can read some of the things they wrote in this analog volt meter's instructions.
"If opened, care should be taken to exclude the minutest dust or fluff."
Apparently there was alot of fluff in the air in the 1950's.



There was a very short time in history when electronics used these digital displays called "Nixie tubes", this old Multimeter is an example of this forgotten technology, surprised that it still works!:


This little box contains a piezoelectric calibration device - made by GE's Space Division.


This is a old analog multi meter last calibrated in 1952!


This is an electrical resistance tester. You turn the handle and it generates electricity. The level of electrical resistance of whatever you're testing is displayed on the analog display. And yep, it still works!


You can read some of the things they wrote in this analog volt meter's instructions.
"If opened, care should be taken to exclude the minutest dust or fluff."
Apparently there was alot of fluff in the air in the 1950's.




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