ID Part, Please

[paulsomlo]

This came in an auction lot, mostly machining tools, but some automotive parts. Length is about 5", width 1.5", the resistor measures 0.3 ohms or less. The two halves are separated by an insulator with a metal shorting strap between them.

 

[paulsomlo]

I posted too soon - a Google image search revealed this:

 

[RTM]

Dang, and I was gonna say shunt for an automotive tester.

My newer (1970s) cheaper one has it built in I think.

 

[paulsomlo]

I have no use for it - if anyone wants to pay shipping on it, it's yours.