Precision Glass Stress Measurement
Jeffoptech delivers advanced surface and edge stress meters for tempered, heat-strengthened, and architectural glass. Compliant with ASTM, EN, and GB standards.
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Jeffoptech delivers advanced surface and edge stress meters for tempered, heat-strengthened, and architectural glass. Compliant with ASTM, EN, and GB standards.
Beijing Jeffoptics Company Limited, established in 2015, is a leading developer of glass quality control instruments. We specialize in R&D for surface and edge stress measurement devices used globally in architectural, automotive, and industrial glass manufacturing.
Our mission is to provide accurate, portable, and user-friendly instruments that meet international standards including ASTM C 1048, ASTM C 1279, EN 12150-2, and GB 15763.2. With integrated PDA systems and powerful PC software, our meters eliminate manual calculations and reduce operator error.
High-precision, portable glass stress meters designed for non-destructive testing in production and quality control environments.
DSR Method, portable, easy operation. Measures thermally tempered and strengthened glass.
Fully automatic device with PC software. Half the operation time of JF-3B.
WiFi-enabled for real-time data transfer. Compliant with GB, ASTM, and EN standards.
PDA-integrated system with adjustable hinge. Live image preview and dual-view software.
Manual adjustment with dual knobs. Ideal for field and lab use.
Dedicated edge stress measurement for quality assurance in glass processing.
Advanced reflective method for high-accuracy edge stress analysis.
Next-generation device with enhanced optics and digital interface.
Engineered for accuracy, durability, and ease of use in demanding industrial environments.
All devices meet international standards for glass stress measurement.
Advanced optics and digital processing ensure repeatable, reliable results.
Compact design allows for on-site testing in factories and construction sites.
Serving clients in over 80 countries with technical training and system integration.
DSR (Differential Stress Refraction) is a non-destructive optical method used to measure surface stress in tempered glass by analyzing light refraction at the glass surface.
Yes. Models like JF-3E and JF-3H are designed to measure glass with curvature radii as low as 200mm.
Absolutely. Most models weigh under 1kg and are battery-powered for field use.
Yes. PC software is included with models like JF-3E for data analysis, reporting, and system configuration.
Our meters meet ASTM C1048, ASTM C1279, EN 12150-2, EN 1863-2, and GB 15763.2 standards.
For inquiries, technical support, or distributor information, visit our official website.
Note: Contact details are available on the official site. No form is provided here for security and accuracy.
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