#6 outfit gear specs are:
32 pitch
14 1/2 degree pressure angle
9 inch pitch diameter

#8 and #10 ring gear specs are:


32 pitch
14 1/2 degree pressure angle
12 inch pitch diameter

#16 ring gear specs are:
32 pitch
14 1/2 degree pressure angle
20 inch PD = 640 teeth gear
All the cirkut cameras were made in small batches and there were continuous refinements, so when calculating the various distances you need measure each individual camera