Not marked except for 4IN.
The shaft is loose to slide up against the piece to be clamped, then, by twisting the thumbscrew, it engages a threaded collar that tightens it.
A great idea, probably from the late 1800s, G .......... $40.00
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Quick-adjusting Clamp
Not marked except for 4IN.
The shaft is loose to slide up against the piece to be clamped, then, by twisting the thumbscrew, it engages a threaded collar that tightens it.
A great idea, probably from the late 1800s, G .......... $40.00