-40%
McGill Electrical Supplies Catalog 1920 Electro Portable Lamp Guards Light Bulb
$ 14.78
- Description
- Size Guide
Description
McGill Electrical Supplies Catalog Number Nineteen, 1920, McGill Manufacturing Company, Valparaiso, Indiana, in used condition, missing rear cover.About 4" X 6"                             28 Pages
See many photos below for complete description and condition.
Thwing Potentiometer Checking and Calibrating Set
Patented May 30, 1933 by E.J. Albert, Assignor to Thwing Instrument Co. of Philadelphia, Pa.
Potentiometer Device for testing and calibrating meters
In very good condition, looks as if it was refinished. Two original style batteries are included
very nice hard wood case
It has the instructions on the inside of the lid.
This item is sold AS-IS , no returns, I do not know if this works
This was my fathers ,who was an engineer.