Shopping Cart

Your cart is empty.

Your cart is empty.

Mitutoyo 137-012 Tubular Vernier Inside Micrometer, Extension Rod Type, 2-2.5' Range, 0.001' Graduation, +/-0.00017' Accuracy

Free shipping on orders over $29.99

$139.94

$ 66 .99 $66.99

In Stock
  • Tubular micrometer measures the inside dimensions of cylinders, rings, and parallel surfaces
  • Vernier scale in inch units for taking precise inside dimension (ID) measurements
  • Includes interchangeable extension rods for a diversified range of measurement
  • Slow head travel helps provide fine positioning
  • Solid extension rods help provide durability


The Mitutoyo 137 series tubular vernier inside micrometer includes a set of extension rods with anvils for a diversified range of measurement measuring inside dimensions (ID) of cylinders, rings, and parallel surfaces. It has a vernier scale in inch units for taking precise ID measurements to 0.001”, and a satin chrome rust- and glare-resistant finish. The micrometer head has a travel of 0.5” per revolution that helps provide fine positioning. The solid extension rods help provide durability. A locking clamp helps hold measurements in place. The micrometer and accessories come with a fitted case for storage.

Micrometers are precision measuring instruments that use a calibrated screw to measure small distances. These measurements are translated into large rotations of the screw that are then able to be read from a scale or a dial. Micrometers are typically used in manufacturing, machining, and mechanical engineering. There are three types of micrometer: outside, inside, and depth. Outside micrometers may also be called micrometer calipers, and are used to measure the length, width, or outside diameter of an object. Inside micrometers are typically used to measure interior diameter, as in a hole. Depth micrometers measure the height, or depth, of any shape that has a step, groove, or slot.

Mitutoyo manufactures precision measuring tools, metrology equipment, and systems. The company was founded in Tokyo in 1934 and formed Mitutoyo America Corporation in 1963, which is headquartered in Aurora, IL.


anthony torres
Reviewed in the United States on June 21, 2024
Buen producto.
ana iris
Reviewed in Mexico on February 10, 2024
Las imágenes publicadas muestran un set, pero la publicación es únicamente para la pieza 137-012. Publicidad engañosa.No se recomienda la compra.
Dina Do
Reviewed in the United States on March 21, 2021
The advertising shows a set with multi pieces but delivered only 1 piece which is too expensive.
Alex Howe
Reviewed in the United States on January 18, 2015
I have this set its very well made and very accurate, perfect for engine building.