FEATURES  Set of three digital micrometers- furnished with ratchet stop, lock nut, and standards, in case.  Combination ratchet and speeder for uniform pressure and quicker adjustment  Gracefully designed tapered frame for use in narrow slots and tight places  Balanced frame design and extremely hard and stable one-piece spindle  Micro-lapped carbide measuring faces  Ring-type knurled lock nut for quick and sure locking  .001" is read directly from the counter  .0001" is read from the sleeve  Clear, easily read numbers  Starrett No-glare satin chrome finish on thimble and sleeve minimizes annoying surface glare under bright lights and resists rust  No-glare black finish on the frame  Hard and stable one-piece friction thimble permits one-hand operation of micrometer and uniform contact pressure  SPECIFICATIONS  Made in America: Yes  Micrometer Type: Mechcanical Digit Micrometer Set  Set Range (in): 0-3"  Graduations (in): .0001"  Resolution (in): .0001"  Micrometer Sizes: 1,2,3 In  Micrometers Included: 3  Anvil/Spindle Material: Carbide  Anvil Type: Flat  Spindle Type: Flat  Lock Nut Type: Knurled Ring Type  Thimble Type: Ratchet  Thimble Graduations: English  Standards Included: 1,2 In  Case Type: Wood Case