Date: 12/31/1969 Views: 2647
Date: 02/27/2009 Views: 2654
Date: 09/18/2010 Views: 2827
Date: 08/23/2023 Views: 144621
Date: 05/23/2007 Views: 549800
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!