T663XRL Starrett Carbide Heavy Duty Micrometer Head


The T663XRL features heavy-duty construction with a larger diameter spindle, clamping surface, and thimble.

Product Description


The T663XRL head is invaluable for use on electronic equipment, machine tools, fixtures, special gaging, and other equipment where precise movement and adjustment are required.

-Advanced sleeve design with staggered lines and distinct figures for precise and easy readability
-Clear, easily read numbers reduce errors
-Quick-reading figures
-No-glare black finish on the frame
Starrett no-glare satin chrome finish on thimble and sleeve
-Available with reverse reading, if needed
Ease of Handling
-Ring-type knurled lock nut for quick and sure locking
-Choice of smooth friction thimble for uniform pressure or combination ratchet and speeder for uniform pressure and quicker adjustment ( T663XRL / V663MXRL)
-Micro-lapped measuring face for flatness and squareness
Accuracy and Long-Life Features
Extremely hard and stable one-piece spindle


Starrett Carbide Heavy Duty Micrometer Heads

T663XRL: 0-1″ Range, .0001″ Grad
V663MXRL: 0-25mm Range, 0.001mm Grad


Additional Information

Weight 2.2 lbs
Dimensions 7.3 × 5.3 × 5 in
Micrometer Type

Mechanical Micrometer Head

Range (in)


Graduations (in)


Spindle Material


Lock Nut Type

Ring Type Knurled

Spindle Type


Thimble Type


Accuracy (in)