DXL360 Digital Protractor Angle finder
This particular model is sold under a number of brand names, all manufactured by Shenzhen Sunhkey in mainland China. While most of us are not used to seeing high quality products from of China, this digital protractor may indicate a change coming. Of all the digital angle blocks on the market, it has the most features for the money.
The display features measurements off of both the horizontal (X) and vertical (Y) axis, as well as a bubble level which can be used by laying the unit flat on a surface. Resolution is down to 0.02 degrees, with an accuracy of plus or minus 0.01 degrees. It can measure both single and dual axis angles, with a 360 degree range on single angle and a 40 degree range on the second angle. The unit comes with rechargeable batteries which can recharge off the included charger or a USB port. A convenient hold button allows you to store a reading for later use.
The case for this digital angle block is unique as compared to the others on the market. Rather than smooth sides, it has protruding corners, which are actually V blocks for using it on either flat or round surfaces. This is the only model with this feature. Five magnets in the case allow you to connect it in a variety of different ways.