Transmission ratio: 158/15=10.53
Pointer shaft span: 18.5
Module: 0.15
Shaft extension protroding bigger splint: 5.0
Shaft extension protroding smaller splint: 5.1
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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