by mark996 on 04/22/05 at 18:22:44
I hate to admit that I've been a carpenter for 30 years or more and I've never found out those mystery marks on most all tape-measures. It seems that there's an arrow every 19 3/16 + inches. Can anyone please make me look foolish and solve this riddle. Thank you Mark996
Re: longtime puzzle
by Robert Fogt on 04/23/05 at 02:45:15
This is used when laying out engineered floor trusses that are 3-1/2" thick, there are six trusses or five spaces per 8' piece of subfloor.
The red diamond at 16" is for wall studs, the black diamond at 19 3/16 is for trusses.
I know Stanley uses diamonds, while other brands may use arrows or just different colored marks.