Best Digital Angle Finders & Gauge Reviews

When we’re just starting out in woodworking, it’s hard to find the right angle for a specific job. We usually wind up looking at our carpenter’s square multiple times to get that last notch for the perfect angle. The carpenter’s square is just one of the tools needed to find an accurate angle when starting out in woodworking.

Finding the angle of a wall, furniture, or mold could be very handy if you’re an artist working on your next masterpiece. But these can be a major hassle to find out without an angle finder. The problem is, mechanical angle finders are usually expensive and may not be easy for a beginner to use anyway.    

Best Digital Angle Gauge Reviews

1. BOSCH 4-in-1 Digital Angle Finder GAM 220 MF

BOSCH 4-in-1 Digital Angle Finder GAM 220 MF

The Bosch GAM 220 MF Digital Angle Finder is four tools in one: an angle finder, a cut calculator, a protractor, and a level. The flip display is illuminated and rotating, making it easy to read. The simple miter cut calculation has an input range of 0-220°, and it includes a compound cut calculator. It has clearly labeled buttons for straightforward calculations. This angle finder provides angle memory, to provide the same angle measurement in different areas of the Jobsite. It’s a perfect tool for carpenters, remodelers, and contractors.

Includes: (1) GAM 220 MF Digital Angle Finder, (1) Leg Extension, (1) Hard Thermoformed Case, (4) AA 1.5V Batteries

If you’re a carpenter, contractor, or remodeler, the Bosch GAM 220 MF Digital Angle Finder is a must for your tool kit. This 4-in-1 tool is an angle finder, cut calculator, protractor, and level all in 1. It’s easy to use with its illuminated display and straightforward calculations, and it offers a memory storage function that makes repeated measurements simple.


  • 4-in-1 design: angle finder, cut calculator, protractor and level
  • Rugged IP54-rated housing to withstand job site rigors
  • Angle memory function makes it easy to take measurements in different areas
  • Illuminated flip display is easy to read, and clearly labeled buttons make the tool easy to operate
  • Designed for easy on-the-go field calibration
  • Long-lasting 80-hour battery life
  • Leg extension range of 0 to 6.75″ (0 to 17.1 cm)
  • Leveling accuracy of the vial is ±0.05°
  • Applications Carpenters, Contractors, Remodelers


  • It comes with an LCD monitor for easy viewing
  • It is easy to use and lightweight
  • It comes with IP54 waterproof protection
  • The angle finder comes with other tools


  • The angle finder needs recalibration when using it for some time
  • The tool is a little too bulky to carry around
  • The price point is too high for its features
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2. Proster 0-225° Digital Angle Finder

Proster 0-225° Digital Angle Finder LCD Protractor Angle Gauges Spirit Level 400mm/16 inch Vertical Horizontal Dual Spirit Level for Carpenter Woodworking Home Decoration


  • HOLD button to lock angle
  • Measuring range: 0~225°.
  • ON/OFF LED Lighted display
  • ON/OFF Button; Low power Alarm.
  • Hole to hang the digital angle level.
  • 0.1° accuracy as you open or close the angle.

Proster 0-225° Digital Angle Finder is a digital angle measuring device whose read is easier and more exact than other scale indicated angle levels.

It is mainly used as a spirit level to quickly measure the horizontal and vertical angle.

It is also intended for applications that involve lineation for woodworkers, measure and definition of the exact angles such as trays, sloping roofs, and handrails.

Proster Angle Finder because it is easy to hold and grip. The angle finder is also small and can go where your standard protractor won’t fit. The angle finder also has a tough and durable build, which can last the user a long time. It is a contender for the best digital angle finder in the market right now.

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3. GemRed 82305 Digital Angle Finder Protractor

GemRed 82305 Digital Angle Finder Protractor (Stainless steel, 7inch/200mm) (Black Button)

The GemRed 82305 is a feature-rich device that easily stands out in a fiercely competitive field of excellent angle finders.

This is a 2-in-1 folding rule with a big difference, having a digital readout of the angles. Measure both the angle and length at the same time with a clear display and bold markings in both metric and imperial on the rules. The rules are made from corrosion-resistant stainless steel. The battery life is around 200 hours and is protected by auto shut down after 6 minutes. They have a clever auto-start of the digital read-out, this will switch on as soon as you open the rule, saving time and fumbling for a button. A serious tool for any carpentry or setting out the task.

Key Features

  • Measures both the angle and length, metric and imperial scales
  • Calculates angles quickly and accurately, clear digital display
  • Easy operation with just two operating buttons
  • Locking function to transfer angles easily and accurately
  • Corrosion resistant stainless steel rules for durability
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4. Wixey Digital Angle Gauge Type 2 with Magnetic Base

Wixey Digital Angle Gauge Type 2 with Magnetic Base and Backlight


  • Resolution: 0.1 degrees
  • Display Type: LCD
  • Range: +/- 180 degrees
  • Accuracy: +/- 0.2 degrees
  • Repeatability : +/- 0.1 degrees
  • Size: 2.3” x 2.3” x 1.1”
  • Auto Shut Off: Yes
  • Backlight: Yes

Once you get used to using an easy-to-read, digital setup tool at the table saw, you’ll want the same reliability and convenience for other uses. When it comes to setting miter angles, or a drill press, for example, a digital protractor is just the ticket.

Wixey built the same ease-of-use into the protractor as they introduced in the angle gauge. This device works in any position, however, making it perfect for setting up a miter saw or miter gauge.

You’re not limited to tool setups either. You can take the protractor anywhere you need to measure an angle.

With the Wixey Type 2 Digital Angle Gauge simply “zero” the device on your machine table surface, and then attach it to your table saw blade using its powerful magnets in order to display the bevel angle accurately and precisely. The large fixed display shows angles in 0.1-degree increments. New Type 2 design uses common AAA batteries.


  • Precisely set blade bevel on table saws as well as tilt angle on drill press and sanders
  • Backlit screen for easy readability
  • Zero button calibrates the gauge to any reference surface
  • Eliminate errors in parallax from reading the angle gauges on your miter saw
  • Powerful magnets in bottom surface adhere to cast-iron tables and steel blades
  • Easy-to-follow instructions for operation and calibration
  • Uses common AAA batteries (not included)
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5. General Tools T-Bevel Gauge & Protractor

General Tools T-Bevel Gauge & Protractor #828 - Digital Angle Finder with Full LCD Display & 8' Stainless Steel Blade

Make the perfect cut on your next home project with our General Tools T-Bevel Gauge & Protractor. To clear the display to zero, make sure the blade is completely closed into the handle and press the zero button. Next, open the blade to the desired angle to be measured and screw down the locking screw to save the angle. You can also press the hold/rev button for a few seconds, saving the measurement for transfer.

Press the red button to get the reverse angle readout and press the hold/flip button for 3 seconds to invert the display. It’s the perfect carpenter gift for dad, grandpa, our spouse, who enjoys completing the task themselves. At General Tools, we offer over 1,000 products to choose from. We’re proud to provide merchants, artisans, and DIYers worldwide with a broad range of affordable, specific-purpose mechanical hand tools and precision measuring and inspection gear.

Take the guesswork out of angle measurement and duplication with this 2-in-1 Digital Sliding T-Bevel and Protractor! Features a large digital angle readout that gives you precise 360° measurements with an accuracy of 0.3° and .05° resolution and holds them while you transfer to stock. Ideal for measuring, storing, and transferring inside and outside angles when building cabinetry, furniture, picture frames, installing tile, and more. Includes a reverse display button, flip display button, locking knob or manual measurement transfer, four-function control buttons, and an auto shut-off feature. 8″ stainless steel blade with impact-resistant ABS handle. Includes one CR2032 3V lithium battery.


  • 2-in-1 tool takes the guesswork out of angle measurement and duplication
  • Holds measurement for transfers
  • 4 function control buttons
  • 8″ Stainless Steel blade
  • Impact resistant ABS handle
  • Full LCD Display
  • Range: 0-360°
  • Resolution: .05°
  • Accuracy: 0.3°
  • Voltage: DC 2.5V-3.2V
  • Power Source:1 “CR2032” 3V Lithium battery (included)
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How to Use a Digital Angle Finder

Angle finders use two hinged arms and an integrated protractor-like scale or digital device to read the angles of both inside and outside corners. When using an angle finder, the surface you are checking must be free of high spots and debris, and the protractor arms must be straight to ensure an accurate reading.


Determine the angle for mitering trim work by dividing the inside or outside angle dimension in half. For example, if the angle finder shows that a corner is 91 degrees, miter the end of each trim board at 45.5 degrees. When fitted together the boards will form a 91-degree angle.

  1. Loosen the center locking nut located where the arms of the angle finder meet.
  2. Push the arms of the angle finder into an inside corner, whether it’s two walls, two pieces of molding or other elements forming a corner. Make sure both arms are resting fully on their respective surfaces.
  3. Tighten the locking nut to secure the arms’ positions.
  4. Read the angle dimension aligned with the reference line on the protractor, or read the digital display.
  5. Measuring outside corners using the same technique, placing the angle finder over the two sides of the corner.

For carpentry purposes, house building, or just out of curiosity you must have thought, what is the angle of this corner. To find the angle of any corner you have to use a protractor angle finder tool. There are different types of protractor angle finders. Here we are going to discuss some easy and commonly used types of them, then how to use them properly.

How to Measure the Exterior Wall?

If you are using a digital angle finder, then line it up on the external surface of the wall or object. You will see the angle on the digital display.

Line up

If you are using a non-digital type one then it should have a protractor and two arms attached to it. Use those arms to line up the angle of the exterior wall (flip the scale if necessary).

Take Measurement

Before lining up, make sure your arms are tight enough so that it doesn’t move around after lining up. After lining up, pick up the angle finder and check the degree on the protractor.

How to Measure the Interior Wall?

To measure the interior wall or the interior surface of any object, you have to do the same as the exterior wall. If you are using digital ones then it should be easy. If you are using a non-digital type then you can flip the contraption by pushing on backward. Once it is flipped then you can easily line up with any inside wall and take a measurement.

Multipurpose Angle Finder

There are some analog angle finders that serve as more than just an angle finder tool. These angle finders have multiple lines on them and it can often get confusing. Empire Protractor Angle Finder is one of the multipurpose angle finders that are widely available. It is a small tool that can measure any angle from a leg of a small chair to a tall brick wall. It has four rows of numbers on it. Here I will break down what each line means. Even if you are not using this exact type of angle finder, after this you should be able to tell what your multipurpose angle finder’s row of numbers tells you.

How to read an Angle Finder correctly?

Don’t bother using the shitty, incorrect instructions that come from Spohn on how to set your Pinion Angle.

They tell you to measure the angle of your DS and then measure the angle of the rear. Measuring the angle of the DS doesn’t tell you jack **** that you need to know to properly set the angle.

The DS could be at any angle depending on the load on the wheels and thru the full range of the suspension travel. Take for example a truck that has a lift kit installed – do you really think the DS angle is anywhere near being the same as a truck without a lift? Measuring the actual DS angle does not tell you anything about the angle of the engine/tranny as it can swivel on the tranny yoke U-joint independent of the tranny angle.

Here is the CORRECT way to set PA as I recently found out straight from a GM engineer after trying the 20 some different ways that are described:

1) Alignment

Have the car on an alignment rack that supports the car by tires or raises the car in such a manner as to put a load on all (4) tires as if the car was on the ground.

2) Remove DS

Remove DS (making sure to make a reference mark on the pinion yoke and a corresponding mark on DS rear yoke to allow for the same position when you bolt back up)

3) Place the Gauge

Using an angle finder, first measure the angle of the engine/tranny combo by placing gage on the output shaft tail shaft housing face. Record this angle and note whether it is pointing down to the ground or up (most likely will be pointing down).

4) Measure rear Angle

Using an angle finder, then measure the angle of the rear by placing gage on the face of pinion yoke where U-joint straps interface. Record this angle and again note whether it is pointing up or down.

U-joints are designed to work best in conjunction with one another when the angle imparted to them on each end of the DS is the same yet in opposite direction. Think of an imaginary centerline thru your crankshaft/tranny output shaft and another thru your rear pinion shaft. If you were to draw these (2) lines they would need to be PARALLEL to each other (not in-line but parallel) to allow the best-operating conditions for the u-joints and the least vibration.

So it follows:

5) Correlate Rear and Tranny Angles

If your tranny measurement is 2 degrees pointing DOWN – then your rear angle should be 2 degrees pointing UP. This would yield a zero-degree pinion angle and is where your car is set up from the factory. For strip cars with high HP/TQ and good tires, you can impart a -1 to -2 degree angle relationship between the rear and tranny angles. This is due to the fact that the rear rotates thru an arc upwards under high loads – so if you give it a negative angle, to begin with when it finally is done rotating upwards – the angle will come back to zero.

So if you wanted to do this, and the tranny angle is 2 degrees DOWN – then you would want to set the rear angle to 1 degree UP for -1 and zero for -2.

6) Use Torque U-joint strap bolts

Re-install DS aligning the positioning marks on the rear yoke that you made in step 2. Torque U-joint strap bolts to 14-19lb-ft and use Loctite on the bolts.

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