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

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SUMMARY

The discussion centers around the identification of a peculiar instrument composed of a brown metal strip, likely copper, and a grey metal strip, possibly invar or iron. The strips are connected at one end with circular fasteners and feature screws at the opposite end, functioning similarly to metallic castanets. The community seeks further clarification through photographs or detailed measurements to assist in the identification process.

PREREQUISITES
  • Understanding of bimetallic strips and their applications
  • Familiarity with metal properties, specifically copper and invar
  • Basic knowledge of mechanical fasteners and their functions
  • Experience in instrument identification and description
NEXT STEPS
  • Research the properties and applications of bimetallic strips
  • Explore the characteristics of copper and invar metals
  • Study the mechanics of fasteners used in instrument assembly
  • Learn techniques for instrument identification and classification
USEFUL FOR

This discussion is beneficial for physics students, instrument makers, and hobbyists interested in mechanical devices and materials science.

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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