And I also like conduit for checking dbg.

Although I never used one when installing, I now use a bosch laser tape measure somewhat frequently for various things like estimating lengths of cable for a job or filling out survey forms. Those things are incredibly accurate (to the 32nd of an inch) and I wouldn't hesitate to use one if I was installing again. Man how nice it would have been to simply hold it on the rail bracket and get an instant measurement that's accurate when setting up my top rail brackets instead of twisting and stretching trying to hold a tape measure in place, no bowing in it and read the darn thing accurately while on the extension ladder jammed at an angle into the shaft corner. This is what it must feel like to be a retired mechanic that installed elevators with square bolt heads and all hand tools watching the new generation throw stuff in twice as fast with battery powered impact wrenches and be thinking how nice it would've been to have had that modern technology when they were doing it.