Date: 12/31/1969 Views: 3182
Date: 06/07/2009 Views: 6670
Date: 12/31/1969 Views: 2562
Date: 08/23/2023 Views: 143466
Date: 05/23/2007 Views: 549413
Straight edges. Ones on left with holes have cork backing, keeps straight shape better. Without cork better for checking curves. Besides Isopropynal removing witness marks on Andair gasculator, it also does a fine job on some rulers!