Description
Model: EDJ-40C
The EDJ-40C Crack Meter is a mechanical surface-mounted instrument designed for precise measurement of surface crack width variations on concrete, masonry, or rock structures. It provides a simple, cost-effective, and easy-to-read solution for long-term crack monitoring in buildings, dams, retaining walls, and other civil structures.
The device consists of a graduated scale plate and a transparent acrylic plate with a fine hairline cursor mark. When installed across a crack or joint, any opening or closing movement causes the scale and cursor to shift relative to each other. This movement can be read directly to a resolution of 0.5 mm, allowing clear visual observation of structural movement without specialized equipment.
The EDJ-40C is ideal for use in routine structural health inspections, providing quick, reliable measurements with minimal installation requirements.
Specifications
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Instrument type: Crack Meter
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Sensor type: Mechanical, uniaxial
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Configuration: Graduated scale with transparent acrylic reading plate
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Application: Monitoring surface crack movement in concrete, masonry, or rock structures
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Measured parameter: Crack width variation
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Measuring range: 50 mm, 100 mm
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Testing & calibration: Not applicable (manual visual measurement)
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Key features:
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Simple, reliable, and maintenance-free operation
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Direct visual reading to ±0.5 mm accuracy
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Quick installation on flat or slightly irregular surfaces
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Ideal for permanent or temporary crack monitoring applications
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