Need Info: Instrument from Rubicon Company in Philadelphia

I recently picked up this strange thing at a thrift shop. Trying to
find out what it is. I know it isn't a radio, but figure some of you
that have been around the block may know what it was.

It has Photocells written under the top left buttons, looks like
contacts for a battery. GA under the other top contacts.

My guess it is from the 1930s-1950s

Pictures can be found at Http://www.randompostcinema.com/what.html

Anything you can tell me on what the heck it is, I much appreciate it.
You can reach me at

Thanks much!

 

Lightmeter? Bridge circuit, provisions for an external mirror galvo,
battery.

Doesn't it have a nameplate? Pics are pretty fuzzy and it is
hard to read the legends. Try placing the thing upside down
on a scanner.

 

looks like an old "standard cell", but the "photocell" labeling is
confusing.

...Jim Thompson

 

What does the upper label on the corner say?

This looks like it was made in the early 1930's to the mid 1940's. If
I had more views of it, especialy clearly (not out of fucus) showing me
the labels on everything, including rear views, I may be able to
identify it. I am very familiar with many of the types of test gear and
radio equipment from that era.

Jerry G.
======

 

Resistance/ohm meter standard of some type would be my guess.

Don
313

 

The 2 knobs fitted on it are UK military, circa 1939-1947. Maybe some
lend-lease item?.