Mitutoyo 571-203-30 Digimatic Depth Gauge

Technical Overview

Hardened stainless steel 0-300mm depth measurement tool featuring ABSOLUTE electrostatic capacitance technology, 0.01mm resolution, and SPC data output.

Key Features

ABSOLUTE (ABS) electrostatic capacitance linear encoder preserves the origin point for the lifetime of the battery, eliminating the need for repeatedly setting the zero point.
Hardened and micro-lapped stainless steel base and measuring faces provide superior durability and wear resistance.
Integrated SPC data output port enables seamless real-time data export to quality control systems.
Clear digital LCD display with a large 9mm character height for easy readability.
Zero-setting, Origin-set, Automatic power ON/OFF, and alarm functions (low voltage, counting composition error).

Technical Specification Matrix

Parameter	Value
Measuring Range	0 - 300 mm
Resolution	0.01 mm
Accuracy (Maximum Permissible Error EMPE)	±0.03 mm
Repeatability	0.01 mm
Base Dimensions (W x T)	100 mm x 6.3 mm
Sensor Type	ABSOLUTE electrostatic capacitance linear encoder
Max. Response Speed	Unlimited
Power Supply	1x SR44 (938882) battery
Battery Life	Approx. 5 years (20,000 hours) under normal use
Display	LCD, 9mm character height
Material	Hardened Stainless Steel
Data Output	Yes (Digimatic SPC)
Physical Weight (kg)	0.31
Dimensions L x W x H (cm)	40.3 x 10 x 1.7

Industrial Applications

1. Automotive Engine Block Cylinder Depth Inspection

Utilized in automotive assembly lines to verify the depth of piston pockets, cylinder bores, and combustion chamber recesses up to 300 mm deep.

Problem Solved

Replaces slow manual vernier depth instruments, preventing parallax errors while securing reliable 0.01 mm resolution measurements that can be compiled digitally.

Cylinder depth measurementPiston pocket inspectionSPC output validationEngine block dimensional audit

2. CNC Mold and Die Cavity Depth Auditing

Used on high-precision machining shop floors to measure deep milled cavities, pocket keyways, and complex stamping dies during setup and final QA.

Problem Solved

Hardened stainless steel base prevents scratching against abrasive tooling surfaces, while the wide range allows checking deep molds on a single calibrated hand tool.

Mold cavity measurementKeyway inspectionTool and die verificationHardened stainless steel face

3. High-Throughput Quality Assurance Auditing

Integrated into fast-paced factory audits for immediate dimensional checks of stamped parts, punch-die clearances, and step assemblies.

Problem Solved

Eliminates the need to re-zero the device upon every startup due to the integrated ABS encoder, allowing inspectors to complete cycles faster and direct data to local SPC databases instantly.

Punch-die clearanceStep depth inspectionABSOLUTE encoder sensorData collection network