Have you ever wondered how builders make perfectly straight buildings? With the protractor! Or at least this is one of the indispensable tools and is used to measure angles, so that a building or even other elements belonging to the construction, carpentry, mechanics and DIY fields, are built or mounted at the correct angle.

We find mainly two types of protractors, the analog ones, and the other digital ones, the latter made by including other instruments such as laser levels and inclinometers. They are the measuring tool that cannot be missing from any professional’s toolbox.

Here we had selected some of the best digital protractors for you that are given below.

General Tools 828 Digital Sliding T-Bevel Gauge & Digital Protractor in One
  • DURABLE - Commercial grade digital sliding T-bevel and digital protractor with impact resistant ABS handle
  • HOLDS MEASUREMENTS- on digital angle finder for transfers between different surfaces or jobs
  • TRANSITIONAL DISPLAY - Digital angle gauge has a reverse display button and flip display button with a locking knob for manual measurement transfer. Full LCD display with large digital angle readout.
  • AUTOMATIC SHUT-OFF- feature that preserves battery life of the woodworking tool
  • DUAL APPLICATION - T-bevel/digital protractor combo- is made with an ergonomic impact resistant handle with 8-inch stainless steel blade used for taking measurements
SaleRANK NO. 2
Digital Angle Finder Protractor, 2 in 1 Angle Finder Ruler with 7inch/200mm for Woodworking/Carpenter/Construction/DIY Tools (2 Batteries and Carpenter Pencil Included)
  • 📏【2 in 1 Digital Angle Finder】TBVHOMM protractor has the function of a ruler and a protracting tool. The combination of a millimeter and inch scale ruler and a protractor makes it easy to measure internal and external angles. Suitable for woodworking, construction, drafting and other fields.
  • 📏【2 Batteries and Carpenter Pencil Include】It comes with a CR2032 button battery inside, you can use it directly when you receive it. We also give you a additional battery as a spare, and a carpenter pencil for your friendly use.
  • 📏【Large LCD Display & Accurate Reading】 TBVHOMM digital protractor is equipped with a large LCD display for easy reading; Measuring Range: 0~999.9°; Accuracy ±0.3°; Resolution 0.1°
  • 📏【Lock, Zero, Hold and Reverse angle functions】This protractor can be locked at any angle by rotating the Locking Knob and pressing the HOLD function button will hold the reading. When you take large angle measurements and reverse measurements, long press the Rev button and the display can be read upside down. Zero button can reset the angle measuring tool at any time.
  • 📏【Wide Application】Combining the functions of a digital angle meter and a protractor, it can be used to measure all the angles in your workshop for a wide range of uses, such as checking the angle of a table saw blade or the accuracy of a miter saw, making angle cuts or measurements, trimming or wall angle measurements. A perfect gift for woodworkers, architects, DIY enthusiasts, etc.
SaleRANK NO. 3
GemRed 82305 Digital Angle Finder Protractor (Stainless steel, 7inch/200mm)
  • 【2 Functions' Combination】Ruler and protractor combination for easy measuring inside and outside angles. 【Digital Display】Easy to read.
  • 【Durable Rulers】Well-made stainless steel rulers and laser etched measurements offer clear reading and years' usage.
  • 【High Accuracy】Accuracy of this protractor is ±0.3 degree. It is a good choice for most projects like woodworking, crown molding and daily use. Folded length: about 7.5 inch/220mm.Total length 400mm.
  • 【Locking Function】For read it easily, GemRed angle finder could be locked at any angle. *NO REVERSE ANGLE/DISPLAY FUNCTION.
Digital Protractor DXL360S GYRO + Gravity 2 in 1 Digital LCD Protractor Inclinometer Dual Axis Level Box 0.01°Resolution
  • 【DXL360S Digital Protractor Accuracy&Resolution】High accuracy +/- (0.05 Degree + 1%, high resolution 0.01Degree
  • 【Easy to use】DXL360S inclinometer has 5 face Magnetic base, Audible alarming at settable angle range. There is 4 face V Shape case for easy to fit at the corner or pipe. Press Angle key at the first face, and then rotate slowly and must keep the rotation axis to another testing face. It will then show the angle once you not move the unit.
  • 【Charger port】The DXL360S Digital Protractor could be rechargeable.It is very convenient by using it, connecting the USB cable to the unit and a computer's USB port. The charger port is 5V 500mA Mini type-B USB port.
  • 【User Interface】The angle finder is designed with Mono-color LCD with backlight, friendly for the users.
  • 【Wide range of applications】You can use the digital protractor in the follwing application:Interior decoration,Construction area,Plumbing,Floors & Stairs,Woodwork.
Mitutoyo 950-315, Digital Protractor / Digital Level, Pro360, 6"
  • Full 360 degree range (90 degree X 4)
  • Machined aluminum frame
  • Reading hold
  • Simple calibration
  • Supplied in fitted carrying case
Digital Level Protractor Inclinometer Magnetic Level Angle Meter Angle Finder Level Box Angle Measuring Tool for Carpentry,Building, Automobile, Masonry etc
  • ➤Digital goniometer, high precision, high accuracy, shock absorber reading is not easy to rebound, quickly help you easily complete the work
  • ➤LCD LCD display, night work can also read the value clearly, battery power shortage prompt
  • ➤Small and convenient, long press ON/OFF can shut down or turn on equipment, 3 minutes without operation will automatically shut down
  • ➤The built-in magnetic base can be firmly fixed on any metal surface
  • ➤Measuring data saving function. Press HOLD key to save the data of angle measurement reading
SaleRANK NO. 7
General Tools 822 Digital Angle Finder Rule, 5-Inch
  • Digital stainless steel ruler and angle finder combo makes precise measurements for easy woodworking
  • Digital protractor has lock and reverse angle functions that make all types of work easy and fast
  • Hinge mechanism on the angle rule allows a full 360-degrees to measure inside outside and reverse angles
  • Woodworking tool can be zeroed at any point in the swing; digital measuring stick has a length of 5 inches
  • Protractor comes with a large easy-to-read LCD display; never guess or eye ball the angle and length again with one convenient tool
Inclinometer, RISEPRO Digital Protractor Angle Finder Level Inclinometer Magnetic V-Groove 0~360 degree with Backlight 82413B
  • USEFUL 3-IN-1 DEVICE – This newest digital gadget features with protractor, angle finder and level in one measuring tool. Large and ultra clear display helps you to work at dark condition.
  • WIDE APPLICATIONS – Great tool for automotive, wood & mechanical industries, machinery, medical fields and etc
  • V GROOVE BASE – The V Groove base with strong magnets enables strong attachment over a curve or cylindrical magnetic surfaces such as metal pipeline or shafts
  • CONVERTS ANGLE TO OTHER UNITS : Conversions between : 4 x 90˚ m/m : 1000mm/m, % : 100%, in/ft : 12in/ft. No more guessing or fuzzy conversion!
  • ABSOLUTE & RELATIVE MEASUREMENT – The regular absolute measurement mode can only measure the angle against horizontal plane. This tool also features with relative measurement mode for quickly measuring angle between two measured surfaces.
Neoteck Aluminum Digital Angle Finder Protractor 225° 16 inch Backlit LCD Digital with Horizontal and Vertical Bubble - Silver
  • 【Digital Angle Finder Protractor】 with High Accuracy, Delicate Design and Modern Appearance, An Interior Designer Should Have One!
  • 【High Accuracy】 Angle Range is 0-225°, Measuring precision: ±0.5°, Increase/Decrease Angle: 0.1°
  • 【Data Hold】If You Want to Use Data Holding Function, You Need to Press the HOLD Button in Red rather than Twist the Knob. (The Knob is Just for Loosening and Tightening. It Can't Hold the Angle Firm Completely!)
  • 【Backlit LCD Display】 Come with Backlit LED Display Which Makes it Possible to Read the Data Clearly, Even under a Low Light Circumstance
  • 【With Horizontal and Vertical Bubble Level】 It Also Can Be Used Like a Spirit Level, Helping You to Check and Calibrate (NOTE: It is NOT a Digital Level. Will Not Display a Number on LCD, Just Only Assist You to Judge If It Is Horizontal / Vertical or Not)
Angle Gauge, eOUTIL Digital Protractor/Inclinometer/Angle Finder with V-Groove Magnetic Base - Precision Level Box for Automobile, Woodworking, Building, Drilling Machinery, Masonry (Blue)
  • The digital level is more precise and often easier to use than old-school models with bubble vials.2.2” digital level's versatility and accuracy make it a must-have tool.
  • Strong Stable Magnetized Base---The bevel gauge with V-Groove strong magnetized base allowing you attach the cube directly to any ferrous metal surface, even a curved surface.
  • Easy to Read---Digital level has upgraded LCD screen, the measured values displayed are clearer and brighter, even in the dark does not affect reading.
  • Two Measurement Modes---Absolute angle mode and relative measurement mode, press the "ZERO" button to achieve relative/absolute measurement interchange at any position, could not be easier.This sturdy mini tool also functions as an inclinometer, protractor, and a level and bevel gauge.
  • Portable & Lightweight---eOUTIL digital inclinometer has portable size, it's convenient to carry and co-work with other measuring tools and enlarge measuring range. It is compact and very much affordable.
SaleRANK NO. 11
Electronic Inclinometer, Digital Protractor/Level/Angle Finder and Gauge Tools with V-Groove Magnetic Base and Backlight - Dust and Waterproof IP65 Precision Smart Level
  • USEFUL DIGITAL LEVEL TOOLS – The newest digital level is more precise and often easier to use than old-school models with bubble vials,gadget features with protractor, angle finder and level in one measuring tool.
  • V GROOVE BASE AND BACKLIGHT – The V Groove base with strong magnets enables strong attachment over a curve or cylindrical magnetic surfaces,Backlight helps you to work at dark condition,the measured values displayed are clearer and brighter
  • WIDE APPLICATIONS – Great tool for automotive, wood & mechanical industries, machinery, medical fields, Building, Drilling Machinery, Masonry etc
  • CONVERTS ANGLE TO OTHER UNITS : Conversions between : 4 x 90˚ m/m : 1000mm/m, % : 100%, in/ft : 12in/ft.The regular absolute,this tool also features with relative measurement mode for quickly measuring angle between two measured surfaces.
  • PORTABLE &LIGHTWEIGHT---Digital inclinometer has portable size, it's convenient to carry and co-work with other measuring tools and enlarge measuring range. It is compact and very much affordable.
SaleRANK NO. 12
Digital Angle Finder Tool 7 Inch / 180 mm Stainless Steel with Pouch, Digital Protractor Angle Finder for Woodworking Measurement, Angle Measuring Tool by S&F STEAD & FAST
  • 2-in-1 electronic digital protractor ruler for measuring lengths and angles, both internal and external. Made with high quality stainless steel and with durable etched measurements.
  • Continuous scale on both sides of digital angle ruler so you can measure greater lengths in inches and mm, up to 15 16/32” and 400 mm. Folded length is 219 mm / 8.6”. Angles displayed in degrees and minutes or degrees to 2 decimal places and resolution of 0.05°.
  • With hold function to store measured angle in memory and zeroing button to reset angle finder tool at any time. Automatic power off after 5 minutes. Clear operating instructions provided.
  • Included 3v CR2032 battery and a pouch / case to store and carry your angle tool securely. Great gift for dads, men and women who work in woodworking, construction, engineering.
  • Many uses, for example as miter saw protractor or for checking angle of blade on table saw or accuracy of miter saw, making angle cuts or measurements, trim / wall / corner angle measuring, bending tubing and metal sheets. Caution: This protractor for woodworking has sharp corners. Handle with necessary care.
iGaging Digital Protractor with 7" and 4" Stainless Steel Bladed
  • iGaging 7" digital protractors will assist in making ultra-precise angled measurements

Buying Guide to Select the Best Digital Protractors

Many manual jobs, related to DIY, construction, the manufacture of machines, and the development of musical or mechanical instruments, generally require precision meters, such as protractors. This product will allow you to perform exact measurements of vertical, horizontal, and uniquely angular surfaces.

What Is a Protractor?

The protractor is an instrument in the shape of a circle, or a semicircle graduated at 360 ° or 180 ° that allows you to measure the angles between two objects and that has been used since ancient times.

Traditionally these tools were used to measure two points of a coast or the position of a star and the horizon. They can determine the latitude in which they are located with straightforward mathematical calculations to be performed very precisely.

Traditional protractors were also called sextants, while these days these tools have further evolved and are used in construction, carpentry, mechanical production workshops, and DIY.

What Is a Protractor For?

Protractors are used to measure and check the angles between two surfaces with a standard edge (a point). For example, they can be two walls, a roof, the slope of a ramp concerning the horizontal plane of the floor, or the two faces of a prism that you need to weld.

As you can see, the applications are various. Digital protractors, in combination with a tape measure, an inclinometer, or a spirit level, are especially suitable for any construction job.

They also serve to measure the cutting angle of the pieces used in the manufacture of furniture, machinery, and even musical instruments, and it is, therefore, a valuable aid in precision work.

What Is Your Usual Use of A Protractor?

As we have already mentioned, protractors can be used for a wide variety of jobs and in different sectors. It is common to see them used for both professional and minor employment at home, as they offer great ease in carrying out delicate jobs and can be used in conjunction with other measuring tools.

Below we list in detail some of the work you can do with your protractor, whether you want to use it in the workplace or to use it at home without any complications:

  • Installation of shelves and cabinets.
  • Installation of door and window frames.
  • Decoration of indoor and outdoor spaces.
  • Construction works.
  • Carpentry works.
  • Pipe installation.
  • Production of musical instruments.
  • Machinery production.
  • Installation of hinges for doors and windows.
  • Physiotherapy.

What Are the Differences Between Protractors and Levels?

The laser levels are used to control the verticality or horizontality of a surface. Their function, in fact, of both digital and analog models, is to determine whether a plane is correctly levelled.

On the other hand, these tools have other capabilities than leveling, such as measuring distances or angles. Protractors are used to measure acute, right, and obtuse angles between two floors that can be two walls, a gable roof, the angle between two pieces that you need to weld, or want to join. Some digital protractors may also have leveling functions, and many models incorporate the traditional spirit level.

In Addition to Measuring Angles, What Else Can I Do with A Protractor?

In addition to measuring, the most critical use of a protractor is the transport of angles. What does it mean to transport corners? It involves measuring an angle, for example, the angle of a beam about the wall or a column, and then carrying it on a cutting element to make a precise cut that adapts to the desired inclination.

This is a particularly important application for work with oblique cuts to be performed with a miter saw or with a circular table saw. These types of operations are prevalent in carpentry.

For example, when there is a need to adapt the measurements of a piece of furniture to a space that is located in a false square. The transport of corners is also used in construction and artisanal production.

What Are the Advantages of A Digital Protractor Compared to An Analog One?

Analog (traditional) protractors are little more than an angular conveyor with a ruler attached to the centre that rotates freely around its point of attachment. The base of the conveyor is applied to one of the surfaces while the ruler is placed on the other: the angle can, therefore, be measured by the central graduated disk.

Digital protractors avoid complicated dial readings as they show information on an LCD; in addition, many models offer other functions such as angle conversion. Here are some of the main advantages of a digital protractor:

  1. They show information on an LCD.
  2. They have a backlight so that you can work in low light conditions.
  3. They offer the conversion of angles into sexagesimal (most used), centesimal, or radiant degrees.
  4. They allow you to store measurements and download data to a smartphone or computer.
  5. They are faster since you need to apply them on the surface to be measured.
  6. Some protractor models have applications that allow you to use them together with other elements such as a laser level or a laser meter.

What Can I Integrate My Protractor With?

As we have just finished explaining to you, protractors work very well together with other measuring instruments such as spirit levels, inclinometers, and laser meters. Some models (the largest ones) usually have a space in one of the arms, designed to insert a laser meter, but can also be used with spirit levels.

A little known trick is to combine the protractor with a laser meter thus obtaining an arm of infinite length. To do this, place the main arm above the reference surface and the other arm above the surface to be measured. If you want to project the angle, place the laser meter on the same weapon to make it project the laser line with maximum precision.

Is a Protractor or An Inclinometer with A Laser Meter Better?

You must keep in mind that these two instruments perform very different functions: although some laser meters include inclinometer functions.

The angle measurements they offer will never be as precise as those of a protractor. This instrument instead provides an angle measurement exact and very reliable, unlike the inclinometer that detects the differences in height.

As we previously told you, it is possible to combine both devices to measure angles, level, and distance with a single instrument, but our advice is not to try to use one to replace the other. Protractors are very inexpensive devices, and it is worth investing in them to avoid problems.

What Kind of Maintenance Does a Protractor Require?

As these are precision instruments, protractors need to be treated with some care. Remember that a blow or a fall could damage its mechanism and block it or worse still make it malfunction. You can’t afford to take wrong measurements for important angles, so we recommend following some safety criteria.

Below we show you what these criteria concerning the safety and maintenance of protractors that will be very useful for you to preserve these tools optimally, also adding some tips are.

  • Avoid forcing him or getting hit.
  • When you open the arms to measure the angles, make sure not to push the mechanism.
  • If the protractor has a brake, never force it. The tool must rotate freely.
  • Always keep the protractor in its case.
  • Store the instrument in a cool, dry place away from sources of moisture, sunlight, and corrosive products.
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