Yeah, that's a BAD habit he has. But he's got ten thousand different ones if he wreckes one, and he's very much not interested in true precision, most of the things he makes could be measured with a retractable steel tape. Not picking on him at all, it's not a bad thing, he's just doing a different thing than the "bigger" youtube channels are, where people get hung up on splitting tenths on cosmetic details. Unfortunately though, these calipers do make good workable scribes, if you're careful how you use them. It's very easy to get a little wierdness if you don't hold them at perfectly the samd angle every time. You can modify them a little if it's a dedicated scribe. But they scriibe well even if it's a horrible thing to do..
If you've got a trustworthy one (or two) don't scribe with them. Go to Harbor Freight (or any junk brand from the internet), and buy a crappy set just for scribing. Dont' worry about battery life (or get a dial). You're not scribing to a precision that needs that. Problem solved. And if it's just for scribing, consider the dial type that reads out in fractional inches. They're very low resolution compaired to a "real" one, but they're perfect for fractional dimensions down to 1/64 (32 is the smallest you'd probably use them for anyhow) checking nominal material thickness, loose bolt diameters, bolt head dimensions before you go to the tool box (Even the odd square head bolt from a hundred years ago who's size ends up being something/32 of an inch...) Well, now you can carry that measurement over to the wrench drawer, and use the inside jaws to buzz through the inch, metric, whitworth, and whatever other wrenches you have to find the best fit. Any way, any style of cheap (borderline disposable cheap) metal framed calipers (can't scribe with composite ones) is a wonderful way to keep the good ones good. Keep that in mind for when you see a spectacular deal on something that's too cheap to trust for anything else.
