Come on play her at her own game. Get hold of the tape and start playing with it get a grin on your face you know the one . Tell her she looks stunning and sexy . She will grab the tape off you and say " typical man I will do it myself " If she does not you have not been good at it and need more practice . If it works don't mention me.
Get rid of all tape measures from the house.
I’ve just realised, everytime I hear the distinctive death rattle of a tape measure, my wife then announces a plan which requires me to do stuff against my will and a barely used possession, to go to the skips and be replaced by something else very similar.