The Starrett 436-3 1/2 Automotive Crankshaft Micrometer Is Designed For Automotive Work And Especially For Crankshaft Measuring. It Is Also Well Suited For All Other Work Within Its Capacity. It Measures The Diameter Of The Journal Bearing And Main Bearing Of Most Crankshafts Since The Micrometer Has A Range From 1-1/2" (38Mm) To 3-1/2" (88Mm).

• Includes ratchet stop, lock nut, sttandard
• .0001" Graduation
• 1-1/2 to 3-1/2" Range
• Rigid one-piece frame of drop forged steel, ribbed for extra strength
• Extremely hard and stable one-piece spindle
• Micro-lapped measuring faces