Transmission ratio: 115/15=7.66
Pointer shaft span: 19.7
Module: 0.2
Shaft extension protroding bigger splint: 4.3
Shaft extension protroding smaller splint: 4.9
Distance between centers: 12
Distance between holes: 8
Taper ratio: 1:30
Hole diameter: 3.1/3.4
Material: Lead brass
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