Proxxon TBM 115 Precision Drill Press Polishing Compound Gauge values are SWG (British

Gauge values are SWG (British Standard Wire Gauge)

and V-grooves

Alphanumeric LCD displays both karat value and gold percentage simultaneously

Otto Frei part number 134

Proxxon TBM 115 Precision Drill Press Polishing Compound Gauge values are SWG (BritishThe Proxxon TBM 115 is a quiet, stable precision drill press with a built in motor designed for controlled drilling in precious metals, plastics, wax, and other fine materials. Three belt driven spindle speeds let you match the machine to the material, while the integrated motor keeps vibration low for accurate, repeatable results on delicate jewelry and model work. Features Quiet, low vibration operation with integrated motor Three spindle speeds for