Condition: Brand new, sealed in its original case. The micrometer and accessories are unused and supplied exactly as from the factory.

The Mitutoyo 145-190 is a mechanical inside micrometer designed for precision measurement of internal diameters between 125 mm and 150 mm. With 0.01 mm graduations and finely ground carbide measuring faces, it delivers stable, repeatable results in demanding machining and inspection environments. The satin chrome-finished sleeve and thimble provide excellent readability while resisting glare and wear.

Mitutoyo is a world leader in precision measurement, and their Series 145 inside micrometers are known for accuracy, robust construction, and smooth spindle operation. This tool is ideal for machinists and inspection professionals requiring dependable internal diameter verification.

Features & Technical Specifications

Parameter	Detail
Condition	New, sealed in original case
Model	145-190 (Series 145)
Measuring Range	125 – 150 mm
Graduation	0.01 mm
Accuracy	±3 µm
Measuring Faces	Hardened, precision-ground
Spindle Travel	25 mm
Thimble	Ratchet stop for constant measuring force
Finish	Satin chrome sleeve and thimble
Storage	Supplied in Mitutoyo fitted case
Brand	Mitutoyo (Japan)

Keywords

inside micrometer, Mitutoyo 145-190, 125–150 mm micrometer, internal diameter measurement, machinist tool, precision metrology, toolroom measuring instrument, bore measurement, inspection micrometer, high accuracy inside micrometer.

Inside Micrometer

Mitutoyo 125-150mm Inside Micrometer 145-190