Date: 12/31/1969 Views: 3857
Date: 12/31/1969 Views: 2835
Date: 01/11/2008 Views: 3388
Date: 08/23/2023 Views: 159889
Brought the square out again and lined it up with the mark, square to the bottom and measured up to the hole. That measurement is close to 1 3/4" (4.45 cm) up.