Date: 12/31/1969 Views: 5764
Date: 12/31/1969 Views: 6366
Date: 09/19/2008 Views: 3182
Date: 08/23/2023 Views: 189966
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!