I have the following Titan Quick-Read Tape Measures:
12 ft x 5/8 inch will not lock
25 ft x 1 inch will not lock
33 ft x 1 inch will not lock
None of the Titan Quick-Read tapes will lock the tape in place when the tape is extended out from the tape container. I donated all to a charity. I do NOT recommend this brand; a total waste of money.
What I do have that works are the following:
12 foot Stanley Write-On – no problem
12 foot Stanley Power Lock – no problem.
25 foot Craftsman 939455 – no problem