Mitutoyo 25-50mm Groove Micrometer 146-223

Description

Arriving late September 2025 for delivery – Pre-order now

Condition: Used – in good working order, tested, and includes its original wooden protective case with inspection papers.

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Product Overview

The Mitutoyo Groove Micrometer Model 146-223 is a precision measuring instrument engineered for accurate groove width, depth, and location measurements inside bores and tubular components. Featuring a non-rotating flanged spindle and disc-shaped anvil design, it delivers reliable readings through dual scales for inside and outside measurement—eliminating the need for corrections due to anvil thickness. A dual-directional ratchet stop ensures consistent measuring force, making it an indispensable tool for machinists, inspectors, and quality assurance professionals working with precision metalwork.

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Features & Specifications

Specification	Detail
Model	Groove Micrometer, Series 146, Non-Rotating Spindle
Measurement Range	Outside: 25 – 50 mm Inside: 26.5 – 51.5 mm
Graduation	0.01 mm
Maximum Permissible Error (MPE)	±10 µm
Measuring Method	Flanged spindle with disc-shaped anvil; dual inside/outside scales
Ratchet Stop	Two-directional ratchet for consistent measuring force
Parallelism	10 µm
Mass	Approx. 175 g
Analog Scale	Satin-chrome thimble & sleeve, ø18 mm
Spindle Pitch	0.5 mm
Measuring Surfaces	Hardened steel
Delivered With	Wooden protective case, inspection papers

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Keywords

Groove micrometer, Mitutoyo Series 146, internal groove measurement, non-rotating spindle, dual-scale micrometer, precision machinist tool.

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Manufacturer Reference

Mitutoyo Groove Micrometers – Official Product Page (Series 146)