Date: 12/31/1969 Views: 6250
Date: 01/09/2010 Views: 6955
Date: 05/31/2009 Views: 6405
Date: 08/23/2023 Views: 723284
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!