/ 436MXRL-250 We are sorry but the item (436MXRL-250) you are looking for is no longer available Please reach out to us at custsupport@starrett.com or call at 978-249-3551 for assistance. There is a newer version of this product available 436.1MXRL-250 Outside Micrometer The Starrett 436M Outside Micrometer features ratchet stop, lock nut and carbide face. 3D CAD Files / Exploded Parts Diagram Login to see related product files. Or create an account.