121 Long Range Tubular Inside Micrometer Sets 32-107" The 121 Tubular Inside Micrometers are designed for large internal measurements beyond the capacity of most other micrometers. Each set consists of a micrometer head mounted at the end of a tubular holder in which measuring rods can be inserted and adjusted to the desired size. Final size reading in thousandths of an inch (.001") is obtained using the micrometer head. Rods and holder are made of steel tubing, light in weight, yet very rigid. Each rod is accurately graduated with inch divisions, which are set to the size desired by a line on the holder, and firmly held by a large, knurled clamping nut. The collet has a design that insures an extremely tight grip on the rods at any setting. Fea tures • Insulated rod holder to eliminate expansion by heat when hand held • Attractive nickel-plated finish; satin-chrome finish on micrometer head reading surfaces • Rods are accurately graduated in inches – micrometer head in thousandths of an inch • Hardened and ground anvils. All rod anvils are adjustable. • Quick, easy adjustment for micrometer screw 824 Fixed Range Inside Micrometers and Sets 2-12"/50-150MM For those who prefer inside micrometers without interchangeable rods, Starrett offers this series of fixed range inside micrometers. The 824 and 824M can be ordered individually or in sets. All 824 and 824M Micrometers feature: • Insulating handles on all sizes minimize possible expansion by heat when hand held • Lock nuts (except 824AA and 824MAA) • Adjustable contacts on thimble end • Adjustable sleeve for head accuracy Inside Micrometers 121 Long Range Tubular Inside Micrometer Sets (.001" Graduation) Cat. No. EDP Range Movement of Screw Description 121AZ 50492 32-57" 1" With 1 graduated measuring rod 121BZ 50493 32-82" With 2 graduated measuring rods and 1 extension rod 121CZ 50494 32-107" With 3 graduated measuring rods and 2 extension rods Each set furnished in attractive, protective case. 824 Inside Micrometers (.001" Graduation) Cat. No. EDP Range Movement of Screw 824AA 56665 2-3" 1" 824A 56666 3-4" 824B 56667 4-5" 824C 56668 5-6" 824D 56669 6-7" 824E 56670 7-8" 824F 56671 8-9" 824G 56672 9-10" 824H 56673 10-11" 824J 56674 11-12" 824K 56675 6-8" 2" 824L 56676 8-10" 824N 56677 10-12" 824M Inside Micrometers (0.01mm Graduation) Cat. No. EDP Range Movement of Screw 824MAA 64192 50-75mm 25mm 824MA 64193 75-100mm 824MB 64194 100-125mm 824MC 64195 125-150mm 824 Fixed Range Inside Micrometer Sets Cat. No. EDP Total Range Description S824AZ 56678 2-6" 4 micrometers, 1" range: 2­ -3", 3-4", 4-5", 5-6" S824BZ 56679 2-12" 10 micrometers, 1" range: 2-3", 3-4", 4-5", 5-6", 6-7", 7-8", 8-9", 9-10", 10-11", 11-12" S824CZ 56680 6-12" 3 micrometers, 2" eange: 6-8", 8-10", 10-12" S824DZ 56681 2-12" 7 micrometers, (4) 1" range, (3) 2" range: 2-3", 3-4", 4-5", 5-6", 6-8", 8-10", 10-12" 824M Fixed Range Inside Micrometer Sets Cat. No. EDP Total Range Description S824MAZ 64196 50-150mm 4 micrometers, 25mm Range: 50-75mm, 75- 100mm, 100-125mm, 125-150mm 121CZ 824C 824B 824A 81 starrett.com M icrometers