Starrett 128AZ Tubular Micrometer Head Set, 70 Pieces, 6 to 78 in Range +/-0.0001 in Accuracy, 0.001 in Graduations, Steel

• Extension rods are lightweight yet extremely rigid
• Hardened ground and lapped surfaces
• All rod anvil contacts are hardened and ground
• Measuring rod anvil contacts are adjustable
• Adjustable, ground steel supporting collars
• Interchangeable tubular steel measuring rods
• Rods provided with insulated handles to minimize expansion from hand heat
• Heads basic length of 4 in (100 mm) can be lengthened to 6 in (150 mm)
• Friction thimble
• Curved anv

Micrometer Head Assembly, Stem, Shell, Adjusting Shell, Spindle, Inside-ENG, Lock Nut Complete, 0.085 X 0.125 X 0.108 Pin, Binder Ring, 0.089 X 0.107 X 0.062 X 0.009 X 2 Spring, 0.375-52 Nut, Barrel Spring, Rod collar, #10-32 Set X 0.188 Long Screw, Shell Cap Anvil, Anvil Nut, 2 in End Rod, Rod Point, Rod Chuck Nut, (2) Rod Collar, (2) #10-32 Set X 0.188 Long Screw, 4 in End Rod, Rod Chuck Nut, #5-40 Set X 0.125 Long Screw, Handle, (2) Rod Collar, Rod Point, (2) #10-32 Set X 0.188 Long Screw, 6 in End Rod, Rod Chuck Nut, #5-40 Set X 0.125 Long Screw, Handle, (2) Rod Collar, Rod Point, (2) #10-32 Set X 0.188 Long Screw, 8 in End Rod, Rod Chuck Nut, Handle, #5-40 Set X 0.125 Long Screw, (2) Rod Collar, Rod Point, (2) #10-32 Set X 0.188 Long Screw, 10 in End Rod, Rod Chuck Nut, Handle, #5-40 Set X 0.125 Long Screw, (2) Rod Collar, Rod Point, (2) #10-32 Set X 0.188 Long Screw, 12 in End Rod, Handle, #5-40 Set X 0.125 Long Screw, Rod Chuck Nut, Rod Point, (2) Rod Collar, (2) #10-32 Set X 0.188 Long Screw, 12 in Extension Rod, Connect Stud, Handle, #5-40 Set X 0.125 Long Screw, (2) Rod Collar, (2) #10-32 Set X 0.188 Long Screw, (2) 24 in Extension Rod, Connect Stud, Handle, (2) #5-40 Set X 0.125 Long Screw, (2) Rod Collar, (2) #10-32 Set X 0.188 Long Screw, (2) #128 Wrench, #3 Wrench, Wood Case Only