Tubular Inside Micrometers SERIES 337 — Extension Rod Type

• Wide range of inside measurements possible by combining extension rods and anvils with the micrometer head.
• Two types of measuring faces are available; with or without carbide tip.
(No. 337-101/301/302/102/303/304 only available with carbide tip.)
• The sleeve is rotated to adjust the index line position when setting to a length standard.
• An inside length standard is required for accurately setting the micrometer.
• Order No. 337-101/301/302/102/303/304