MarCal 16 EWR Digital Caliper – Mahr GmbH

Overview

The MarCal 16 EWR Digital Caliper is a precision handheld dimensional measurement instrument engineered by Mahr GmbH, a globally recognized German metrology manufacturer with over 170 years of heritage in high-accuracy measurement technology. Designed in accordance with ISO 9001-certified production processes and traceable to national standards (e.g., PTB in Germany), this caliper employs capacitive sensing technology to deliver repeatable linear measurements across external, internal, depth, and step dimensions. Its robust stainless-steel construction, IP67-rated ingress protection, and zero-reset functionality make it suitable for demanding workshop, QC lab, and R&D environments where reliability under variable thermal and mechanical conditions is essential. Unlike consumer-grade tools, the MarCal 16 EWR integrates metrological traceability, temperature-compensated electronics, and dual-axis alignment verification — features aligned with DIN EN ISO 13385-1 for caliper performance evaluation.

Key Features

• Capacitive digital display with 0.01 mm resolution and ±0.02 mm accuracy per ISO 13385-1 at 20 °C
• Stainless steel measuring jaws with hardened, ground surfaces meeting DIN 862 surface finish requirements
• IP67-rated housing resistant to dust, coolant, and brief submersion — validated per IEC 60529
• Zero-setting function with automatic drift compensation and battery-powered retention (up to 24 months on CR2032)
• EWR (Easy Work Reset) interface enabling seamless integration with Mahr’s MarWin software via USB or Bluetooth 5.0
• Compliant with EU Measuring Instruments Directive (MID) Annex MI-003 for class II instruments

Sample Compatibility & Compliance

The MarCal 16 EWR supports direct contact measurement of metallic, ceramic, and polymer components with surface roughness values up to Ra 6.3 µm. It is routinely deployed in automotive Tier-1 supplier quality labs for first-article inspection (FAI) per AS9102, and in precision machining facilities validating GD&T callouts per ISO 1101. All units ship with a factory calibration certificate traceable to PTB (Physikalisch-Technische Bundesanstalt) and include optional UKAS-accredited calibration upon request. The device conforms to RoHS 2011/65/EU, REACH Regulation (EC) No. 1907/2006, and carries CE marking for conformity with the EU Electromagnetic Compatibility Directive 2014/30/EU.

Software & Data Management

When connected to MarWin 8.0 or higher, the MarCal 16 EWR enables real-time data streaming, statistical process control (SPC) charting (X̄–R, Cp/Cpk), and automated report generation compliant with ISO/IEC 17025 documentation requirements. Measurement logs include timestamp, operator ID, environmental temperature (via optional external sensor), and calibration status — supporting audit readiness for FDA 21 CFR Part 11 electronic record compliance when configured with user authentication and audit trail modules. Export formats include CSV, XML, and PDF with embedded digital signatures.

Applications

• Dimensional verification of machined engine blocks, brake calipers, and transmission housings in Tier-1 automotive manufacturing
• First-article inspection and PPAP submission support in aerospace component production
• In-process measurement during CNC milling and grinding operations requiring rapid go/no-go decisions
• Research-grade length metrology in university mechanical engineering labs conducting material deformation studies
• Calibration laboratory reference checks against gauge blocks per ISO 3650

FAQ

Is the MarCal 16 EWR calibrated before shipment?

Yes — each unit undergoes full functional verification and receives a factory calibration certificate traceable to PTB.
Can this caliper be used in humid or oily workshop environments?

Yes — its IP67 rating ensures operational integrity in coolant-saturated machine shop settings.
Does Mahr provide UKAS-accredited calibration services?

Yes — available as an add-on service with NIST-traceable uncertainty budgets and formal ISO/IEC 17025 certification.
Is firmware update supported in-field?

Yes — updates are delivered via MarWin software and preserve all stored calibration parameters and user configurations.
What is the warranty period for industrial use?

Mahr GmbH provides a standard 24-month limited warranty covering defects in materials and workmanship under normal operating conditions.