The collar has numbered graduations including 10 and 20. No maker or catalog number is visible.
Vintage Brake Lathe Micrometer Feed Screw Twin Collar Fork End
Vintage Brake Lathe Micrometer Cutter Holder Boring Bar Adjustable
Vintage Brake Lathe Micrometer Boring Bar Pivot Cutter Tool Holder
Vintage Brake Lathe Boring Bar Micrometer Cutter Holder No 34901
Vintage Brake Lathe Boring Bar Tool Holder Micrometer 0.002 Inch
Vintage Brake Lathe Twin Cutter Tool Assembly Micrometer Adjustable
