Electronics > Metrology
Equipment from the past
munorc:
In the realm of old metrology related equipment, do people have any interest in equipment from years gone by? I have read the various posts on Weston Standard cells.
I tend to collect and preserve old equipment more from a historical than practical use case.
An example is this Leeds and Northrup Precision Potentiometer (model 8662). It was put aside mainly since it has a standard cell in it and it was a disposal issue. It has its original manual and the Standard Cell calibration data is from 1941. I have many more that have gotten stacked up in my office, along with mirror galvanometers and individual standard cells.
kbrill:
GE spark gap voltmeter
kbrill:
Somehow second photo did not upload
kbrill:
My foul up
trobbins:
--- Quote from: munorc on January 23, 2025, 04:38:54 pm ---An example is this Leeds and Northrup Precision Potentiometer (model 8662).
--- End quote ---
I also enjoy restoring such vintage gear, and also appreciate anyone who has had the time to take photos and scan any manual and make comparison measurements as to its present accuracy. I've often enjoyed recovering the nominal accuracy of parts like manganin resistances that may have drifted or even broken coils, and surreptitiously upgrading galvanometers.
I have a much more 'modern' L&N Millivolt Potentiometer 8690 with a good Weston cell that still appears to be working fine, but I'm putting off any serious accuracy comparisons or making up a modern replacement 1V ref for the Weston, until I come across a scanned manual.
Navigation
[0] Message Index
[#] Next page
Go to full version