Ewwwww. You know what my favorite machine was and STILL IS? The Hunter A111. So simple and very accurate as long as it's calibrated. Guys used to tell me "it's not accurate because the wind blows the strings".......well close the door, dummy. lol
Yeah. Haha! If I recall correctly the strings were pretty taught when they were attached between the heads on those machines so unless they were doing alignments in gale force winds they wouldn’t be moving too much.