Date: 12/31/1969 Views: 7679
Date: 12/31/1969 Views: 4413
Date: 08/07/2005 Views: 8569
Date: 08/23/2023 Views: 772602
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!