"If you need a long accurate level this seems to be a good answer. I have made do with a 24 inch one for decades, but decided that because I'm leveling a number of floors I would get a more useful sized one. This has been a joy to use. Like the bright red so less chance of damaging it inadvertantly. Guessing it will keep its accuracy, only had it a couple of days. It's got all the features I need but no 45º etc, not really needed for me."