Digital Angle Finder, Digital Level Angle Gauge with Backlight & Magnetic Base Compact Digital Protractor Angle Measuring Tool Inclinometer for Woodworking Construction Table Saw Gift for Men

This is a fairly inexpensive digital angle finder with a magnetic base. Place this on a surface and it will give you a digital readout up to two decimal points of the angle at which it is sitting. I placed it up on a granite slab I have access to that is used and calibrated every six months by a gage lab. Placing this angle finder on the slab showed a readout of 0.05°. that seems about right to me. Even if the slab is exactly 0, I find a deviation of 0.05° to be tolerable for my purposes and for the fact that this is an inexpensive device.One thing I do like is that it has a "Zero" function so that you can zero it at a specific angle and then find a subsequent angle relative to the first angle. The magnetic base is also very useful as you can attach it to most ferrous materials and be sure of its stability. It also means you can attach it to the underside of ferrous materials and find the angle from underneath.One other feature I want to point out is that it has two arrows on each side of the angle readout. One arrow will point upwards and the other arrow will point downward as a visual indicator of the angle. As someone that has a hard time visualizing numbers in my head, having the arrows instead of some positive or negative indicator is very helpful to me. I could use the other indicators, the arrows is just a much simpler and quicker to understand indicator, at least in my opinion.

A digital angle finder is a great tool for a multitude of home improvement projects. If you want to be 100% accurate in the angle of your table saw blade, this can be attached directly to the blade via the magnetic bottom to reach the angle you desire.It appears very accurate as well. Not just giving you the degree, but two decimal points beyond that as well, so you can be pinpoint accurate. The display is very easy to read, with arrow indicators telling you which corner is higher or lower on the device and a large visible display. The controls are extremely simple, with only 3 buttons, although some of the buttons have quick press and long press functionality. Luckily the instruction book is very detailed for being as tiny as it is.One thing I appreciated a lot was the inclusion of a storage / carrying case, a mini screw driver to open the battery compartment, AND two AAA batteries! products almost never include the needed batteries so that was a very nice to see.As accurate as this thing is, it is almost too sensitive. The ZERO button can be hit to give you relative angle, meaning it acts as a tare feature to zero out the angle based on the current position of the device. I could almost never get it to tare to total zero. Every time I hit the button the device shifted a tiny amount and it would end up being at 0.34 or some minor decimal point above zero. This won't be a huge issue in practice, but if you're a bit nitpicky about accuracy and want to see straight zeros across the display it seems to struggle at doing that when setting for a relative angle measurement.The one thing I did not really like was the battery compartment. I wish it didn't require a screw driver to open. They could have made it use a clip or run along a channel to close. Instead you have to bust out a tool to open it and install or replace the batteries. I prefer to not keep batteries in my devices when not using, storing them along side the device to prevent corrosion and the leakage of acid into the device. For this one, it is made just a little bit more inconvenient to do that. The battery cover also is not perfectly fitted, meaning it rattles in place even when properly installed. That is a minor issue and annoyance since it does not impact actual use from what I can tell.Overall though it is a great tool to add to your toolbox and is not only easy to use, but accurate. If you're looking for an affordable digital angle finder with magnetic bottom then this one will work well for you.

This is a very useful tool to have in your toolbox. In a moment you can have an accurate measurement of angle, either from absolute or relative level. When you first turn it on an place it on a surface it acts like a bubble level would, 00.00 is absolute level and any angle you measure is based off a completely level surface. If you however want to measure the angle of a table leg in relation to the floor tabletop, it’s as simple as placing the device on the table top, zero out the reading, then place it on the table leg. 90 degrees is the highest measurement it will read, once you pass 90 degrees vertically, the readout flips vertically because you’ve essentially gone upside down.The magnet is on the bottom edge only but if you do need to measure something like a drop ceiling grid, you can flip it over, attach it to the grid from the bottom and the readout flips so you don’t have to read it upside down. I was able to see the readout in bright sunlight, although the camera that took the attached photo, didn’t pick it up that well.Overall I’ve found it to be accurate and I look forward to using it on my projects.

I don't own a table saw, but I do own a Radial Arm Saw. They are somewhat picky about their alignment, so I was afraid of what I would find. Guess what? My saw blade was 90° to the table!Since I don't like to generate sawdust in the garage, I always pull my saw out to the driveway when I use it. I do what I can to minimize the arm bouncing around, but it gets out of alignment after a while anyway. With this, I can check it every time.Since my saw isn't on a flat floor, the absolute level of the table will change every time, so I will have to either recalibrate this level, or use the "relative" measurement function. I can live with that.WARNING! You have to put batteries in this before you can use it. The battery compartment has a screw to keep it closed. The screw is TINY! Mine fell onto the floor of my garage when I took it out. It took me 10 minutes to find it. (Fortunately, I did find it.) So, MAKE SURE that when you take that screw out, you are over something that will catch the screw when you drop it.