Features:
- All sections have square ends
- Every joint opens on even number
- Inside marked with 6 scales in a 16” module
- The scales are for concrete blocks and glass blocks, for facing tile, for small facing tile and economy brick, for engineered brick, for Roman brick
- Scales include mortar space and spacing for 6” and 12” blocks.
- Outside is graduated on both edges to 1/16ths
- The first end section is a short section which permits butting the rule on the first 16” module
