Dial Indicator Holder Ender 3

Dial Indicator Holder for Ender 3 for bed leveling, search aliexpress ...Dial Indicator Gauge....i used PLA PRO for better size stability (mine fits nice tight) ...it is helpful for leveling but not perfect because by moving the printer head by hand the whole carriage deforms a little bit +-0.05mm so you have to figure out how to move the trolley with stable results by trying, magnets I used are size 12x2mmm (leftover from prehistoric phone case :), print time 1.5hour standard quality with layer high 0.2mm, build plate is not necessary