Starrett T436RLS-3 1/2 Automotive Crankshaft Micrometer, Ratchet Thimble, 1-1/2 – 3-1/2″ Range

Original price was: $503.00.Current price is: $444.00.

The T436RLS-3 1/2 measures the diameter of a crankshaft to ensure its within specified tolerances, which ensures its use for any number of applications. 

Add 5-7 days for calibration

Product Description

The Starrett T436RLS-3 1/2 micrometer is ideal for automotive work, especially for crankshaft measuring. It is also well suited for all other work within its capacity. It measures the diameter of the journal bearing and main bearing of most crankshafts since the micrometer has a range from 1-1/2″ (38mm) – 3-1/2″ (88mm).

Readability Features

  • 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
  • The reading point is on the underside of the sleeve, plainly visible while measuring. It’s a very useful feature when measuring between webs.

Ease of Handling Features

  • 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
  • Gracefully designed tapered frame for use in narrow slots and tight places
  • 2″ (50mm) range
  • 2-5/8″ (66mm) throat depth

Accuracy and Long-Lasting Features

  • Extremely hard and stable one-piece spindle (the heart of Starrett’s accuracy)
  • Quick and easy adjustment
  • Appropriate standard included


  • Aerospace
  • Automotive
  • Machine Manufacturing
  • Medical
  • Sheet Metal Forming 
  • Mechanical Engineering 

About Starrett

The L.S. Starrett Company is a world leader in precision measuring tools and instruments. Since 1880, they have been an industry standard. Starrett’s high quality and durability have made the brand an industry standard for decades. They produce products for various industries, including aerospace, automotive, manufacturing, and commercial construction. Today, they’ve expanded into metalworking, making saw blade products for manufacturing operations worldwide.

Additional Information

Weight 1 lbs

1 1/2 to 3 1/2"







Operation Type


Lock Nut Type

Knurled Ring Type

Thimble Type


Anvil Material


Spindle Type


Spindle Material


Anvil Shape