Details
Three 'light chopper' transmission discs
each with fifty radial slots, aluminium, painted black -- 14 in. (35.5 cm.) diam, centre holes 3/16 in. (4.5 mm.) and ¼ in. (6 mm)
each with fifty radial slots, aluminium, painted black -- 14 in. (35.5 cm.) diam, centre holes 3/16 in. (4.5 mm.) and ¼ in. (6 mm)