0.5–15 Ra/Rq; 0.1–50 Rz/Rt Compact Surface Roughness Tester Internal Memory, Large LCD, Diamond Stylus 90° - Metav IndustryLine

Take advantage of the combination of compact portability, a diamond stylus for repeatable contact, and an internal memory for up to 500 values to keep production checks efficient and traceable; order the instrument directly via Metav Werkzeuge or ask our consultants if needed.

Metav IndustryLine Compact Surface Roughness Tester M502.301 — compact handheld tester with diamond stylus and onboard memory

The Metav IndustryLine Compact Surface Roughness Tester M502.301 is a handheld roughness gauge designed for rapid surface checks and machine‑side quality control in metalworking and precision finishing environments.

• Diamond stylus, radius 0.01 mm, 90°
• Internal memory for 500 values
• Large LCD for clear readings
• Low measuring force <0.016 N

Consistent, traceable readings with sub‑micron display clarity

The design focuses on reliable numerical assessment: a high‑resolution display (reading step 0.00001 mm) and a repeatable contact tip ensure that profile values are comparable from test to test. With a diamond stylus of radius 0.01 mm and a tip angle of 90°, the probe traces surface contours with minimal wear and stable geometry. The low measuring force (<0.016 N) reduces the risk of local deformation on soft finishes, which supports more accurate characterisation of roughness parameters such as Ra and Rq. Stated variation of ±10% reflects application conditions and sample preparation rather than sensor instability, so routine measurement procedures and consistent probe seating are recommended for best results.

Onboard data handling and clear readouts for efficient inspection

Data capture is practical: an internal memory for up to 500 values stores individual runs, enabling immediate spot checks without external equipment. The large LCD digital display shows measured parameters clearly and shortens inspection time on the shop floor. The tester runs from a single 1x AA battery, keeping logistics simple and supporting mobile use. Stored values are ideal for transferring by transcription or manual logging into quality records when external data interfaces are not required.

Compact mechanics built for workshop use

With a lightweight construction of 0.3 kg and compact housing dimensions of 73 x 28 x 62 mm, the instrument is easy to manoeuvre across components and fixtures. The small footprint suits tight measuring positions and frequent relocation between workstations, while the diamond stylus and robust probe assembly tolerate routine handling. This combination of portability and hardened contact geometry makes the tester a practical companion for incoming inspection, in‑process checks and final acceptance tests where access and agility matter.

Relevant parameters and typical applications

The unit measures standard roughness parameters including Ra, Rq, Rz and Rt, making it suited to finishing checks after turning, milling, grinding or honing. Its characteristics support surface verification on machined metal parts, tooling surfaces and small components where quick numerical confirmation of texture is required. By emphasising robust tip geometry and low measuring force, the tester helps maintain process control without damaging delicate coatings or thin superficial layers.

Contact Metav Werkzeuge today to discuss how the Metav IndustryLine compact roughness tester can be integrated into existing inspection routines and to arrange delivery or calibration options

Technical data

• Article number: M502.301
• GTIN: 4054469184494
• Brand: Metav IndustryLine
• Label: Rauheitsmessgerät, Kompakt Ra, Rq: 0,5 - 10 um, Rz, Rt: 0,1 - 50 um

Numbers / Core technical data

• Resolution: 0.00001 mm
• Measuring force: <0.016 N
• Internal memory: 500 values
• Weight: 0.3 kg
• Display: large LCD
• Battery: 1x AA
• Accuracy variation: ±10%
• Dimensions: 73 x 28 x 62 mm

Special features / Versions

• Diamond stylus, radius 0.01 mm, 90°
• Digital measurement with clear numeric readout
• Compact, handheld form factor
• Onboard storage for routine checks

FAQ

What roughness parameters can the tester record?
The tester records standard surface parameters including Ra, Rq, Rz and Rt, making it suitable for common machining and finishing controls.

How many measurements can be stored?
Up to 500 values can be retained in the internal memory for the Metav IndustryLine tester (M502.301), supporting offline logging and batch traceability.

What are the probe specifications?
The instrument uses a diamond stylus with a 0.01 mm radius and a 90° tip angle, selected for longevity and accurate profile tracing.

Is the device suitable for mobile shop‑floor use?
Yes. The compact dimensions and 0.3 kg weight, together with battery operation (1x AA), make the unit practical for portable inspection rounds.

How does the measuring force affect delicate surfaces?
A measuring force below 0.016 N minimises surface indentation and helps preserve soft or thinly coated finishes while still providing repeatable roughness readings.

Manufacturer / Responsible: Metav Werkzeuge GmbH; Parkring 45; 46446 Emmerich; Germany; +49 2822 7131930; info@metav-werkzeuge.com