So you went out and bought yourself a laser engraver. Most people think they will just build the machine and start making money. But there are some tools and accessories out there that will make your experience a far better one.
MEASURING

NEIKO Digital Caliper
First of all, welcome to the world of precision. Your customers want their engravings centered. And in a certain spot.
And if you intend to do rotary operations, a set of calipers is a must have tool.
The only way to achieve precision is to own precision. You also need to measure material thickness frequently, and measure the size of your working area. You need a set of NEIKO Digital calipers.
These are great because they do both metric and imperial measurements and these calipers get really solid reviews on Amazon. The only thing that I will say about them is they take weirdo batteries, LR44, so pick up some spare batteries. And I recommend taking the battery out of it if you aren’t going to use it constantly.
I use calipers on a nearly daily basis while I use my laser engraver. Sometimes a tape measure will do, but calipers are king. And I’m a metric guy. Yeah, I was born and raised in Indiana but lived in Japan for about 16 years. I came to respect and admire the metric system. Say anything you want about the metric system but a precise millimeter measurement beats converting fractions to decimals ALL DAY LONG.