What is it?

[JamieMcC]

Does anyone know what this is? It was about to thrown in the skip with a load of other old electrical bits and pieces it looked interesting.

 

[2Bornot2B]

Looks like a Wheatstone Bridge from high school physics.

 

[Adrian]

http://www.curiousminds.co.uk/Instruments/used_vintage/potentiometer-two-metres-vintage-curious-minds-

 

[JamieMcC]

Perfect thanks the makers name plate on it is even the same "Philip Harris".

 

[howardnair]

Well now that we know what it is. Are you going to hook it up to something. I would be tempted just for fun

 

[RayP]

What resistance is it and how much power do you think it could take?

ray

 

[Adrian]

resistance and power rating?
It is advertised to contain 24 standard wire gage Constantan alloy.
Here's a start on its properties https://en.wikipedia.org/wiki/Constantan.
This alloy is normally found in thermacouples but can also be used in wire wound resistors IIRC (simular to nichrome wire).
I'm sure you can find out much more about with a little google curiosity.

 

[RayP]

http://www.iecpl.com.au/site/prod_det.php?recordID=4794-001

So 1.99 ohms per meter. I'm struggling to think of a use for the device.

ray