Mitutoyo 155-905 Spring Loaded Plunger Hole Gauge with Knurled Clamp

Description

Product Overview

The Mitutoyo 155-905 hole gauge is engineered for high‑precision measurement of internal diameters and groove widths. Featuring a spring‑loaded plunger that expands within the bore, it delivers consistent, repeatable results. The robust knurled clamp locks the gauge securely, preventing movement during use. Constructed from hardened steel, the tool measures 8 x 8 x 0.75 inches and weighs just 11.64 ounces, making it portable yet durable for shop‑floor environments.

Usage

Designed for machinists, quality inspectors, and maintenance engineers, this gauge excels in measuring holes, slots, and grooves on a variety of components—from engine blocks to precision machined parts. Its compact size allows easy handling in tight spaces, while the spring mechanism ensures quick, accurate readings without the need for external power. Ideal for routine inspections, setup checks, and calibration procedures in automotive, aerospace, and general manufacturing settings.

Why Choose Us

Mitutoyo’s reputation for metrological excellence guarantees that each gauge meets stringent accuracy standards. The spring‑loaded plunger minimizes user error, and the knurled clamp provides a firm grip, reducing the risk of slippage. Backed by a comprehensive warranty and responsive customer support, you receive a tool that not only performs but is also supported throughout its lifecycle.

Key Features

• Spring‑loaded plunger expands for precise internal diameter measurement
• Knurled clamp ensures secure positioning for reliable results
• Compact, lightweight design for easy handling in confined spaces
• Durable hardened‑steel construction resists wear in demanding environments
• Dedicated customer support and warranty for peace of mind

FAQ

How does the spring‑loaded plunger work?

The plunger is pre‑loaded with a calibrated spring that expands when inserted into a bore, allowing the gauge to contact the internal surface and provide an accurate measurement.

Can this gauge measure both holes and grooves?

Yes, the design accommodates both internal diameters and groove widths, making it versatile for a range of applications.

What maintenance is required?

Keep the gauge clean and free of debris, and periodically check the spring tension. Store in a protective case to avoid damage.

Is calibration needed?

For critical applications, periodic calibration against a certified standard is recommended to maintain accuracy.

What is the warranty period?

Mitutoyo provides a standard one‑year warranty covering manufacturing defects, with options to extend through authorized service centers.