细节
A Muckle's Cycloidal chuck
for Holtzapffel thread, with extra worm nose and driving screw, reversible (lacking primary-drive bevel-gear attachment); and a box of various taps and die stocks (2)
for Holtzapffel thread, with extra worm nose and driving screw, reversible (lacking primary-drive bevel-gear attachment); and a box of various taps and die stocks (2)