linear wall cracks meter ( fessurimetro lineare )

thingiverse

Linear wall cracks meter engineer told me to keep an eye on some cracks on wall in my house, but these cracks meters cost about 10 euros each, a foolish thing for two piece of plastics with a printed grill, so i decided to design myself and print. the file "griglia.odg" is the grill to be printed an glued to the engraved square on the piece. print with photo paper at maximum resolution to have submillimeter lines to be checked by the cross on the other piece. the two pins are 3.8mm and the holes are 4mm, so print it slow to avoid they mismatching remember to rotate all before print ;)