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buckled end
That's what happened to mine.
I put in this reinforcing cross piece on Friday to take up any potential sag from the mdf shelf.
Despite measuring several times, as well as adding a bit extra* it came up 3mm short. I was totally perplexed until I looked at the tape measure.*I figured I could sand and/or hammer it in place if it was a bit long.
hugo7-
Can be tricky to do in a spot like that, but taking your first measurement from the 100mm point often helps to make more accurate measurements. Just remember to take off the extra 100mm when you make the cut!
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It's a good idea to cut the wood to a bit less than the distance between the walls then offer it up to the gap and mark it. At least until you know your tape measure and technique is working.
Another problem with internal measurements is reading the wrong value on the tape. Still happens to me occasionally.
Basically repeating what Nefarious has already said here!
Nef
Airhead
I’m just going to ignore this post before I fall into the tape store rabbit hole again.
Those BMI tape rules always look dead handy. And their version of the window measure looks a lot handier than the Stanley one I’ve got. They made them for Festool as well IIRC.
I’ve always eyed the talmeters but a few mates have smashed theirs quite easily it seems. Will likely buy one when I do manage to kill my current tapes tho.
Also, don’t buy the yellow and black Stanley tapes. They’re they absolute worst. Almost every one I’ve ever picked up has a buckled end.