These are bench clamps to clamp up a compressed gas cylinder (like oxygen, nitrogen, etc) on the edge of a work bench.One is Fisher Scientific, the other is a Sargent.Clearly used. Straps look worn. Some rust and paint and scratches on them.
Have here a Columbia Quick -Clean Mud Pump for sale , comes with the Columbia box filler. Is in good shape Pump up the value. Cleaning a Pump doesn't get any easier than this!
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