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pcravero · 2nd Nov 2017, 4:22 pm

The Heathkit tip turns out to be very helpful MrBungle! They sold a 3 1/2 digit DVM that reminds very much the Schlumberger 1240: Heathkit IM-102. There is a manual and schematic online. The front panel layout differs, but functions are the same. It also mounts the same "obsolete" CuL chips I have in my 1240.

I want to make a clock out of the DVM but I'd like to keep the original circuit intact and - - possibly - fully functional.

I will report my findings.
Paolo

2nd Nov 2017, 4:22 pm	#3
pcravero Triode Join Date: Aug 2009 Location: Torino, Italy Posts: 47	Re: (Weston) Schlumberger 1240 multimeter The Heathkit tip turns out to be very helpful MrBungle! They sold a 3 1/2 digit DVM that reminds very much the Schlumberger 1240: Heathkit IM-102. There is a manual and schematic online. The front panel layout differs, but functions are the same. It also mounts the same "obsolete" CuL chips I have in my 1240. I want to make a clock out of the DVM but I'd like to keep the original circuit intact and - - possibly - fully functional. I will report my findings. Paolo