What is it? How is it used? It has a label that say "Frey Scientific" so I have emailed them to see if someone there has any idea...
Ok – without being able to draw on this computer … it consists of a plastic ruler attached to a metal plate, with a clamp-type attachment on the metal plate.
Imagine a ruler being held parallel to the desk..
On the back of the ruler is attached a metal plate 125mm x 75mm .. the plate is attached so the 125mm is along the ruler…
Then on the back of the metal plate is a clamp screw with a bar that looks like you can clamp it onto a retort stand or similar…
So when you look at the front
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ruler
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I metal plate I
I I
I I
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Horrible sketch I know but may give someone a clue
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