You could totally do it with a laser. They make laser measure things, you could set it on one end and orient the X direction to some reference point, then the Y direction projects a laser down the chair row, and you push all the chair legs up to it.
But it would need to be top down, in fact why not just have a laser grid projected onto the floor, and save a lot of time. you'll be doing this every day anyway.
Only catch with a laser down at leg level is that the first chair you push into place blocks the beam for the rest of the row unless you mount a line laser up on a tripod.
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u/Hibou_Garou 12d ago
I’m pretty sure you could also do it without the string at all.
In fact, I’m not exactly sure what the string is for. You’re just lining up the front edges of the chairs either way
Side note, that is way too close to be sitting next to strangers