Steel Rule, 6" 4R Flexible, PEC
- 4R graduations, 8ths & 16ths, 32nds & 64ths
- Made from the finest quality steel available
- Fully hardened and tempered with stain chrome finish
- Precisely etched, then black filled for readability
- Rule is 1/2" wide and 0.015" thick
Flexible steel rule made in the US by Products Engineering Corporation (PEC).
When using a precision rule for very close accuracy, the eye can read better by measuring between two lines than from the end of the rule to a line.
Here is how to use a steel rule.