Another ebay find- a vintage Keithley 172 multimeter. The datecodes on the parts range from 1978 to 1984, placing the final assembly somewhere in mid-1980s. It seems fully functional, but could use a bit of a calibration to regain its past precision.
For those interested, here is the user/service manual for the unit
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- No manual to loose
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- Self test built-in. Short an appropriate test point with an input terminal and you get the number to compare to
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- Test pads
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- Is that the Statue of Liberty?
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- 1977 date code
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- A speed 559Khz crystal
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- Shield removed
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- Front panel removed
