Eliminate guesswork, math and the use of dividers. To find center simply align the rule so the same measurement appears to the left of the "0" mark as appears to the right of the mark. The arrow will point to the exact center. Available in 12" and 24" lengths. Aluminum rules are 1-3/4" wide, stainless are 1-1/4".
California Residents: Click here for Proposition 65 information.