This is a simple tool that is intuitive to use. It works great for setting the height of table saw blades or router bits.
I keep finding odd uses for this and it is super useful when you need to know the height of something or to be able to repeat a specific height on multiple items. The screw adjustment is easy to use and it holds its position well.
I checked for flatness against my granite block and it seems perfectly flat. What appears to be a slight gap in the picture isn't a gap. It's just the chamfer on the side. I used this gauge to measure a 0.9845 inch (25 mm) reference and found that it shows the height as just under 1 inch, so it seems pretty accurate.
Honestly the quality and accuracy is there. I really like the carbide foot will ensure that it won't get chew up by bits and ensures it will remain accurate. I tested it against my caliper and it's on point.
Out of the box and tested - and I'm happy to say she's got a home. She'll be living, hanging on a nail, on the side of my main router table. I ordered this depth / height gauge to take the place of a combination square to set the height of router bits in router tables. She's perfectly suited for that task.