Fowler 52-243-512-1 4" - 120" Inside Micrometer

Features:

• Each set consists of an inside micrometer head and a series of fully hardened and lapped extension rods of different lengths all with carbide measuring faces
• Anvil and spindle are hardened and precision ground with microlap finish on ends
• Quick, easy zero adjustment on the sleeve
• Range: 4"-120''
• Graduation: 0.001''
• Accuracy: 0.00005'' x (3 + L''/2)