Divine Metrology

A Surface Finish Tester is a precision measuring instrument used to evaluate the surface roughness and texture of machined or finished components. It helps determine whether a surface meets required quality and functional standards. Description:
The tester typically uses a stylus probe that moves across the surface of a workpiece. As the stylus follows surface peaks and valleys, its vertical movements are converted into electrical signals. These signals are analyzed to calculate standardized surface roughness parameters, which are displayed digitally or recorded for analysis. Key parameters measured: Ra – Average surface roughness
 Rz – Mean peak-to-valley height
 Rt / Rmax – Maximum roughness depth
 Other parameters depending on the model
 Key features: High-precision stylus sensor
 Digital or analog display options
 Portable and benchtop models available
 Memory and data output for quality documentation
 Compliance with ISO, ASTM, and JIS standards
 Applications: Machining and metalworking industries
 Automotive and aerospace manufacturing
 Tool rooms and inspection departments
 Quality control and R&D laboratories
 Advantages: Ensures surface quality and performance
 Helps reduce friction, wear, and fatigue
 Quick and repeatable measurements
 Supports process optimization and quality assurance

Standards Compliance: The Mitutoyo SJ-220 supports various international surface roughness standards, including EN ISO 21920, EN ISO 4287, ISO 13565, ISO 12085, VDA, ASME, and JIS. Data Storage: It can store 10 sets of measurement conditions and one measurement result in the display unit's memory. An optional microSD card can expand storage to 500 sets of conditions, 10,000 sets of results, and 500 sets of image data. Portability: The portable, hand-tool design and built-in battery allow for easy on-site measurements without an external power source. The drive unit can be detached from the display for flexible use in confined areas. Intuitive Interface: The device features an intuitive menu navigation via a touchscreen, supporting 25 switchable languages. Connectivity: It offers multiple data output options, including USB, Digimatic, and optional Bluetooth, allowing connection to a PC or smartphone for data analysis and report creation using the free SJ Communication Tool software.

A Portable Digital Surface Finish Tester is a precision measuring instrument used to evaluate the surface roughness of machined or finished components. It provides quick and accurate measurements directly on the shop floor or in the field.

Description:
This tester uses a stylus-based probe that travels across the surface of a workpiece. The vertical movement of the stylus caused by surface irregularities is converted into electrical signals and processed to calculate surface roughness parameters. The results are shown instantly on a digital display.

Key features:

• High-precision stylus sensor

• Clear digital display with selectable roughness parameters (Ra, Rz, Rt, etc.)

• Compact, lightweight, and battery-operated

• Built-in memory for storing measurements

• Data output for PC or quality systems

• Complies with international standards (ISO, ASTM, JIS)

Applications:

• Machining and metalworking industries

• Automotive and aerospace manufacturing

• Quality control and inspection departments

• Tool rooms and maintenance operations

Advantages:

• On-site and in-process measurement capability

• Fast, reliable, and repeatable results

• Reduces downtime and inspection delays

• Easy operation with minimal setup