“Toolmaker's Chair” Do you know what it is ?

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magnetic single edge finder “Toolmaker's Chair”
Do you know what it is ?
Conveniently attaches itself to workpiece with built-in permanent magnet.
Precision wire cut, allows workpieces to be indicated within accuracy of ±.0001".
If hole or slot is indicated to centerline of spindle, the edge of workpiece will automatically be on center line.
Avoids calculation errors by eliminating additions or subtractions.
Slotted model to pick up single edges

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