Unit: Degree minute (Decimal degree)

Item		Standard
Inner wheel	Minimum	36°24.5′ (36.40°)
	Nominal	36°27′ (36.45°)
	Maximum	36°29.5′ (36.49°)
Outer wheel	Minimum	30°54.5′ (30.90°)
	Nominal	30°57′ (30.95°)
	Maximum	30°59.5′ (30.99°)