This tool is great for leveling, providing quick, precise measurement and a nice visual indicating the direction of the current angle. The angle gauge works great for setting the Altitude for an equatorial wedge, and the magnet in the bottom helps it stay in place when measuring.

We have two, and their measurements are consistent. When measuring a surface leveled with a reliable bubble level, the 935DAG typically shows 0 degrees of tilt. (Occasionally we'll see 0.1 degree, but that might be the actual surface angle. This has finer precision than the bubble level.)

I use this to check the angle on my Ruixin Pro and it works perfectly. I like the ability to Zero out to get an accurate aggregate reading. It has leveled up my knife sharpening skills for sure. I spent a little more for the Klein as it is USA made and am sure the quality is better. We have a Klein plant in the city I live in.

Works as described. Compact and easy to setup

Very accurate, strong magnet and very readable display. This is the third unit I’ve purchased for my shop. Couldn’t get rid of the other two fast enough!

It works as it should, great for setting up my table saw, compound miter saw, jointer fence etc.. 4 stars because I wish that it was USB rechargeable, batteries are a pain.

The Klein Tools 935DAG Digital Electronic Level and Angle Gauge has been an excellent tool for precision work. I primarily use it with my knife sharpener to make sure I’m getting the exact angle on my blades, and it’s made a noticeable difference in consistency and sharpness.

The digital readout is clear and easy to read, and it quickly measures both 0–90° and 0–180° ranges with accuracy. The magnetic base makes it easy to attach securely, and the compact size means it doesn’t get in the way while sharpening.

✅ Pros:

Accurate digital readout for precise angles

Measures 0–90° and 0–180° ranges

Magnetic base for secure placement

Compact and easy to handle

Great for sharpening, woodworking, or general leveling tasks

❌ Cons:

The small display might be harder to read in low light

Requires batteries (included, but be sure to keep spares)

💡 Tips:

Place it on your knife sharpener’s guide to ensure perfect sharpening angles.

Store it in a safe spot to avoid dropping, as precise tools can be sensitive.

Works great for other uses too — like setting angles on saw blades or woodworking tools.

Always calibrate before use to ensure maximum accuracy.

Bottom Line:

The Klein Tools 935DAG is a versatile, precise, and reliable angle gauge. It has made my knife sharpening far more consistent, and it’s a great tool to have for any project requiring accurate angle measurements.

This little box has already earned its place in my tool bag. I’ve used it to calibrate my table saw blade, miter gauge, every reading matched up perfectly with my mechanical protractor.

The magnets are strong enough to hold steady on the blade without sliding, and the backlit screen is easy to read, even under shop lights. The zero function works great when you need relative angles instead of just absolute.

Battery life’s solid so far, and it boots up quick. It’s small, rugged, and gets the job done without overcomplicating things.

If you’re tired of guesswork or squinting at analog bevel gauges, this one’s worth every penny.

Fits anywhere more accurate than a double, doesn't break when dropped off a ladder. So cheap I bout some for work. Battery life is good enough that you dont need to carry extra batteries. Super simple to use even my special ed coworkers can figure it out, and they eat paste daily!

Perfeito

This a great little unit, we have doing reno’s for over a year and I could have used this before now. It is more accurate than what I need but Tver easy to use and easy to read even without glasses which is a big plus. I am typically using it on top of my spirt levels as it’s more accurate and easier to see if you are level. Especially one the longest level where it can be hard to hold it in the right place and get a good view of the bubble. All up I would get another one if it stopped working without hesitation.

I’ve used this for 1.5 years and now it would not power up despite many battery changes.

ممتاز

Great little tool to have. I've used it for finding the pitch of my garage, setting my table saw, chop saw and drill press.