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This simple gauge has been designed to provide inspectors with a low cost alternative to a graduated microscope for determining the width of a crack in concrete or other building materials.
Similar in size to a standard credit card, this transparent gauge is marked with a range of graded lines. Each line is a specified width.
To use, position the gauge over the crack and identify which line is a similar width to the crack. Read off the width value.
| Model | Description | Range | Part Number | |
| mm | inches | |||
| Elcometer 143 | Elcometer 143 Crack Width Ruler | 0.10 - 2.50 | 0.004 - 0.100 | E143----1 |