This is a Bruning Proportional Divider. Model #1860. Made in Germany. It is in fantastic condition and it's never been used. The Proportional Divider shows a division from 10 to 110. The length has to be taken from the short to the long points.
German Silver Geared Type Proportional Dividers by REIFLER - 109691 – Jim Bode Tools
Proportional Divider for sale
Proportional Dividers Smithsonian Institution
Proportional Dividers Smithsonian Institution
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Proportional Divider for sale
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