p - i - n

Speed of the Watch Trains

Watch (beats per hour) # escape teeth /
# pinion leaves
# 4th whl. teeth /
# pinion leaves
Warren 44 (14,400)
15/7
56/7
Samuel Curtis 211 (14,400)
15/7
56/7
Samuel Curtis 899 (14,400)
15/7
56/7
DH&D 1016 (16,200)
15/7
63/8
DH&D 3027 (16,200)
15/7
63/8
P.S. Bartlett 2182 (16,200)
15/7
63/8
AT&Co 5341 (16,200)
15/7
63/8
standard Model 57 (16,200)
15/7
63/8
"Quick Train" (18,000)
15/8
80/10


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