VINTAGE LEEDS NORTHRUP ELECTRONIC DEVICE

[42MAN]

I have a oak wooden box containing an electronic testing device. The box has dimensions of 12 1/4 x 8 1/2 x 7 3/4. Inside the box is the electronic device with a tag. The tag reads: LEEDS & NORTHRUP CO. , PHILIDELPHIA, PENNSYLVANIA , MADE IN U.S.A. , SERIAL # 333561, CATALOG # 7655. It looks to be a electronic measuring device of some type.

[Sheldon J]

What kind of connections (electrical) are on the box?

[DCMatt]

It is a portable thermocouple potentiometer (circa 1930's). Someone smarter than me will have to tell you what it was used for.

DCMatt

[42MAN]

In the upper left corner of the face panel are two screw buttons, where you insert wires and tighten. The top button is marked (+) for positive and the lower button is marked (-) for negative. On the back of the panel is a compartment that you open and insert a good sized battery for the power to the unit.