228 Hub Micrometer 0-1" The 228 Hub Micrometer is an ideal tool for precision measuring of hub thickness, for insertion through small holes to measure thickness, and for many other related uses. Micrometer has a specially designed shallow frame which makes it possible to easily pass through a 3/4" (19mm) hole. Readability Fea tures • Starrett satin chrome finish – no glare – resists rust • Advanced sleeve design with staggered lines and distinct figures for precise and easy readability • Quick-reading figures – every thousandth numbered on inch tools Ease-of-Handling Fea tures • Balanced frame and thimble design ensure easy handling and better readability • Ring-type knurled lock nut for quick and sure locking • Combination ratchet and speeder for uniform pressure and quicker adjustment Accuracy and Long-Life Fea tures • Rigid one-piece frame of drop forged steel • Extremely hard and stable one-piece spindle (the heart of our accuracy) • Quick and easy adjustment Micrometers 228 Hub Micrometer (0-1" Range) Cat. No. EDP Graduation 228XRL 50921 .001" Case Cat. No. EDP Description 228ZZ 55228 Deluxe case for 228 Hub Micrometer 228XRL 62 M icrometers