Antique Electronics and Vintage Solid State

MIT Measurement Lab resistance standards

I obtained these resistance standards from the MIT lab clean-out a number of years ago.

IMG 9344.jpeg

They are marked “MEAS LAB”, which I presume stands for “Measurement Laboratory”. This is the 2,000,000 Ohm standard.

Homebrew 100K Ω Resistance Standard

I’m upgrading my lab standards. Up until now, I’ve just depended on an old and long out of calibration HP 3468A as my lab standard. 

IMG 9309.jpg

I’m constructing a series of resistance standards. Here’s the 100K Ω standard.

HP 3456A Digital Voltmeter

My friend Andy Wallace gave me some test equipment back in the early 1990’s, ...

IMG 9310.jpg

… and this HP 3456A was among them.

At power on, it would fail self-test #4 with an overload  indication (“OL"), so I set it aside, fearing that it would be difficult to find and fix the fault. …

© Steve Byan 2011-2019