This is a large (about 17 inches square x 3 1/2 inches high) box of TTL and other 1970's vintage parts that make up a 5-digit (4 1/2 digit?) DMM. It appears to work but is in need of adjustment/alignment/calibration.
Front panel says: Cimron DMM50 Back label says: California Instruments Model DMM50-04
A look on the web shows little. The company still exists at
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but doesn't make anything like this anymore, nor do they show anything on obsolete equipment, much less anything this old. I'll contact them if nothing shows up here. Any info, especially service info/schematics, appreciated.