5 Best Goniometers (2023 review): Making accurate angle cuts - knoweasy

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5 Best Goniometers (2023 review): Making accurate angle cuts

April 03, 2023

Goniometers, also known as "miter protractors" or "angle gauges", are useful tools for cutting blocks of wood to meet precise angles. A good goniometer should be accurate, reliable, easy to use and durable. Goniometers are available in digital and analog versions to measure different angle ranges, so we researched the best goniometers on Amazon. Learn more about our top recommendations below.


Top 5 Goniometers


Best Analog Model: Starrett ProSite Miter Saw Protractor

Best Digital Model: General Tools Digital Angle Finder

Most Durable: Strongman Tools Heavy Duty Angle Template Tool

Best Magnetic: Johnson Level & Tool Magnetic Angle Locator

Best Multifunction: Bosch Digital Angle Finder


1. Best Analog Model: Starrett ProSite Miter Saw Protractor 


The goniometer includes two scales that provide homeowners with a precise miter saw settings for creating miter joints and miters. In addition, this lightweight tool is made of durable, engineered plastic and has a compact design that fits into virtually any toolbox.


Key Features

  • Seven-inch measuring length
  • Made of plastic
  • Weighs 3.8 ounces
  • 5.4 x 9.45 x 0.85 inches


2. Best Digital Model: General Tools Digital Angle Finder


This easy-to-read angle finder displays the measured angle on its clear LCD. The tool also has an angle lock to ensure your measurements are secure and the angle reading accuracy is 0.1 degrees. In addition, the ruler includes a lithium-ion battery to operate.


Key Features

  • Five-inch measuring length
  • Made of stainless steel
  • Weighs 3.2 ounces
  • 1.13 x 5.38 x 10.88 inches


3. Most durable: Strongman Tools heavy-duty angle template tool


This heavy-duty angle finder is made of rust-resistant aluminum. In addition to its durable design, the tool is etched with laser-engraved measurements to help you get accurate readings. In addition, the angle finder comes with instructions and a pencil for construction.


Key Features

  • With four adjustable bolts
  • Made of aluminum
  • Weighs seven ounces
  • 13.07 x 2.44 x 1.14 inches


4. Best magnetic: Johnson Level & Tool magnetic angle locator


This magnetic goniometer has a V-groove edge that fits most conduit and pipe configurations. It has four easy-to-read quadrants and measures from 0 to 90 degrees. In addition, the goniometer has a small ruler with built-in metric and imperial units.


Key Features

  • Reads 0 to 90 degrees in four quadrants
  • Made of plastic and acrylic
  • Weighs less than an ounce
  • 1.88 x 6.19 x 10.5 inches


5. Versatile at its best: Bosch digital goniometers


This digital goniometer features an IP54 water- and dust-resistant design and a battery-powered display. In addition, the tool's two legs can be adjusted to find an angle range between 0 and 270 degrees, and it is equipped with an integrated laser that can display tilt measurements up to 100 feet.


Key Features

  • Uses four AA batteries (included)
  • Made of aluminum
  • Weighs 2.4 lbs.
  • 17 x 2.4 x 1.4 inches


How to Use the Goniometer


If you take on more projects around the house, you may find yourself faced with new challenges that require you to use a tool for measuring angles. While it's important to research how to find the best goniometer for your needs, it's equally important to understand how to use your new goniometer. Fortunately, goniometers are easy to use when you follow these two basic steps.

  • Step 1: First place the goniometer on the object you are using. Note that goniometers can be used on almost any object, regardless of its shape or size. To help you place the goniometer against the object, some models use a magnetic base to hold themselves firmly in place and provide accurate readings.
  • Step 2: Once the goniometer is secured in its proper position, wait a few moments to calibrate and begin providing measurements. Make a note of these measurements and if equipped, lock the goniometer arm to ensure a reading.



Other Goniometer Tips and Tricks


  1. To ensure accuracy, take multiple measurement readings in the same location where you initially fixed the goniometer.
  2. Do not force the goniometer when placing or pressing it onto the object you are using. You want to apply the proper pressure so that it is flush with the surface of the object, but applying too much force may damage the goniometer.
  3. To mark an object after making an angle measurement, use a pencil with an eraser rather than a pen.
  4. If your hands are shaky or you have difficulty holding something in place, consider having someone else help you hold the goniometer in place.
  5. If you are working on a project alone, we recommend that you choose an advanced digital goniometer, which will help you find the angle easily and accurately.
  6. Make sure you are measuring angles on a completely flat or nearly flat surface.

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