Mitutoyo 550-311-20 Electronic Caliper 0-8 in IP67

Product Description

The MITUTOYO 550-311-20 is a digital electronic caliper designed for precise dimensional measurement in demanding shop and field environments. Built on the ABSOLUTE Digimatic 550 Series platform, it delivers a measurement range of 0 to 8 inches (0 to 200 mm) with a resolution of 0.0005 inches and an accuracy of 0.0010 inches. The stainless steel beam and nib-style angled jaws hold up to coolant, cutting fluid, and general shop contamination thanks to an IP67 ingress protection rating. This instrument is a standard tool for machinists, quality control technicians, and precision fabricators who need reliable linear measurement with digital readout and data output capability.

The 550-311-20 is suited for inside diameter and outside diameter measurements in manufacturing, inspection, and maintenance applications. The sliding jaw adjustment provides smooth, controlled positioning across the full range. A minimum inside diameter measurement of 0.4040 inches (10.10 mm) defines the lower limit for bore measurement. The included case protects the instrument during transport and storage. This caliper fits residential shop, commercial production floor, and industrial inspection environments where repeatable digital measurement is required.

Key Features

• IP67-rated for dust-tight and immersion-resistant operation in wet or coolant-exposed environments
• 0.0005-inch resolution with 0.0010-inch accuracy across the full 8-inch range
• Data output port enables connection to SPC data collection systems and compatible software
• Stainless steel beam and angled nib-style jaws for durability and precise contact geometry
• ABSOLUTE Digimatic technology retains origin position — no need to zero at startup after each power cycle
• Powered by a single SR44 silver oxide battery, included in the package
• Includes protective carrying case for storage and transport

Compatibility

Designed as an OEM-style precision measurement instrument in the MITUTOYO 550 ABSOLUTE Digimatic Series, compatible with MITUTOYO SPC data output accessories and cables designed for Digimatic-interface devices.

Installation Notes

No installation is required for handheld caliper use. When connecting to an SPC data collection system, ensure the data cable and interface are compatible with the Digimatic output standard before making connections. Store the caliper with the jaws slightly open and the lock screw released to avoid spring fatigue. Calibration to a traceable standard is recommended per the metrology program requirements of the end user's facility; this unit ships uncalibrated.