Digital angle blocks are a relative newcomer on the tool scene, taking the place of a level in many instances. Like a digital level, they can give you an exact readout of an angle, off of horizontal or vertical, but are much more portable. Their compact design makes it possible to carry one in a pocket or tool pouch for use whenever needed.
These devices are used for much more than carpentry, as they have worked their way into many other fields where precise angle measurement is needed. Digital angle blocks are used for custom automotive work, setting up saws and other tools, and even for aiming solar panels and satellite dishes. The fact they provide an accurate angle measurement gives them many possibilities for use.
Digital angle blocks can be used either in an absolute mode, where they’re comparing themselves to a factory preset zero or a relative mode, and the user first sets a zero and then measures the angle. This second mode provides the capability of measuring the angle of difference between two planes, neither of which is exactly horizontal or vertical.
Most of these units are less than 2-1/2 inches square and less than 1-1/2 inches thick although there are a few exceptions. Size is intentionally kept small for portability, however that does cause one disadvantage in that they measure the angle at the point where they are located. When used with warped or twisted lumber, they may not be as accurate as a level because they lack the natural averaging capability of the longer tool.
The outer cases of these instruments are magnetized, allowing them to be attached to any ferrous metal object for measurement. If you are installing something with a steel frame and need an exact angle, simply attach the angle block via its magnets and adjust the frame until the right reading appears. This magnetic feature makes it possible to use these devices for setting the angle of table saw blades with extreme accuracy.
As the technology for these devices has improved, some are starting to come out with an onboard level feature. A bubble diagram on the display shows you how close you are to level, giving a quick visual reference for leveling objects. Additionally, some of these tools have a hold button, allowing you to take a snapshot of the measurement and keep it in memory for later use. That feature is very handy when the angle block is used in a situation where you can’t see the display. Check out our list of the best digital angle blocks in 2022.