Mitutoyo 547-301A Digimatic Thickness Gauge

Technical Overview

High-precision 0-10mm ABSOLUTE Digimatic thickness gage with 0.01mm resolution, flat ceramic contact points, and Digimatic data output for robust SPC analysis.

Key Features

ABSOLUTE linear encoder ensures error-free high-speed measurement without losing the origin point
Ceramic disc contact points and anvil offer superior wear-resistance and zero rust concerns
Convenient grip handle and quick-action thumb trigger with spring-loaded spindle for fast one-touch operation
IP42 protection rating prevents dust and dripping water from compromising internal components
Integrates the high-performance ID-C series Digimatic indicator with 330-degree rotating face
Supports Digimatic S1 bidirectional interface for direct data export to SPC software
Built-in GO/±NG tolerance judgment function with clear graphical visual indicators

Technical Specification Matrix

Parameter	Value
Measuring Range	0 - 10 mm
Resolution	0.01 mm
Accuracy	±20 µm
Parallelism	10 µm
Measuring Force	1.5 N or less
Max Measuring Depth	30 mm
Contact Point/Anvil Type	ø10 mm Flat (Ceramic)
IP Rating	IP42
Scale Type	Electrostatic capacitance type ABSOLUTE linear encoder
Power Supply	1 x CR2032 (3V) battery
Battery Life	Approx. 2,700 hours of continuous use
Data Output	Digimatic S1 Bidirectional interface
Display Type	LCD with 11 mm character height
Physical Weight (kg)	0.25
Dimensions L x W x H (cm)	12.2 x 10.2 x 3.6

Industrial Applications

1. Film Extrusion Thickness Verification

In industrial film manufacturing, operators use the 547-301A to perform high-frequency spot-checks directly on the production line. The flat ceramic contact points are rust-proof and non-marking, ensuring they do not scratch or contaminate delicate extruded plastic films, while the ±20 µm accuracy ensures instant confirmation of nominal profiles.

Problem Solved

Eliminates measurement drift and error during continuous production spot-checking by utilizing an absolute linear encoder that retains origin position.

ABSOLUTE linear encoderceramic contact pointsSPC data outputplastic film

2. Cardboard and Paperboard Thickness Control

Paper mills require strict consistency of paperboard thickness for optimal downstream printing and folding. The 547-301A's spring-loaded spindle delivers a controlled, low measuring force of ≤1.5 N, allowing rapid checks across wide paper sheets using the trigger mechanism without excessively compressing soft fibers.

Problem Solved

Prevents compression-induced measurement errors in paper and soft packaging materials by utilizing a low and consistent 1.5 N spring-loaded measuring force.

low measuring forceceramic anvil0.01mm resolutionrepeatability

3. Precision Gasket and Shim Stock Verification

Automotive and aerospace component suppliers use the 547-301A to inspect shims and elastomeric gaskets. Its IP42 protection grade makes it resilient to oil and water splattering typical of stamping facilities, and the integrated Digimatic output allows for instant data transfer to SPC software to monitor tolerance limits.

Problem Solved

Streamlines production throughput and statistical monitoring in oily stamping environments by offering IP42 protection and seamless bidirectional SPC data integration.

IP42 protectionDigimatic data outputflat contact pointstolerance judgment