What is this strange instrument made of brown and grey metal strips?

AI Thread Summary
The discussion centers on an unidentified instrument made of brown and grey metal strips, possibly copper and invar or iron. The strips are connected at one end with circular fasteners and feature screws at the other end that touch when moved together, resembling metallic castanets. Users are encouraged to provide photographs or more detailed descriptions for better identification. The initial poster is seeking help from the community to determine the instrument's purpose and name. Clear identification remains unresolved pending further information.
retagaine
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Hi, physicsforums!
I have a dilemma: there seems to be several strange instruments in our class that nobody is able to identify. The description is as follows:

One strip is a brown metal (copper?) and the other is a grey metal (invar? iron?). (I'm making guesses at the metals due to the fact that someone suggested that it could be some bimetallic strip, although the two strips of metal are not welded together.)

The strips are connected at one end by two circular fasteners. At the other end of each of the strips are connected two screws. When the two strips are moved together, the screws touch at the ridged end (the one that isn't the cap), similar in fashion to metallic casanets. Can anyone here identify what this instrument is? Thanks!
 
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retagaine, Welcome to Physics Forums!

I cannot identify those objects from your written description. Can you post photographs? Or, more detailed description, including measurements. Thank you.

Bobbywhy
 

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