Best Starrett Protractors of 2026

Jennifer Fraser Avatar
Jennifer Fraser
Last Updated: 4 Feb 2026

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Protractors are essential tools for accurately measuring and marking angles in a wide range of industries, including construction, engineering, and metalworking. Starrett is a well-known brand that produces high-quality protractors that are trusted by professionals worldwide. Their protractors come in a variety of styles and sizes, from simple plastic models to more advanced digital versions. Whether you're looking to measure angles for a DIY project or need precise readings for commercial work, Starrett protractors are a reliable choice that won't let you down.

At a Glance: Our Top Picks

Starrett 505A-7 ProSite Protractor for Accurate Cuts Cover #TOP 1
Starrett 505A-7 ProSite Protractor for Accurate Cuts
ftb score rating icon 9.9
Starrett 505A-12 ProSite Dial Protractor Cover #TOP 2
Starrett 505A-12 ProSite Dial Protractor
ftb score rating icon 9.8
Starrett CP505A-12 ProSite Combination Protractor Tool Cover #TOP 3
Starrett CP505A-12 ProSite Combination Protractor Tool
ftb score rating icon 9.6

Top 9 Starrett Protractors

#TOP 1

Starrett 505A-7 ProSite Protractor for Accurate Cuts

505A-7
7" Length
Starrett 505A-7 ProSite Protractor for Accurate Cuts Cover
Starrett 505A-7 ProSite Protractor

The Starrett ProSite Protractor is designed to simplify your measuring tasks. It eliminates error-prone calculations when making meter cuts, ensuring precision in your work. Regardless of whether you hold it upside down or backwards, the readings remain accurate, saving you time and effort. The scale clearly indicates angles for both meter joints and single cuts, meaning you can work quickly and reduce waste. This tool is ideal for carpenters, plumbers, and all building trades, offering significant convenience in your projects.

What We Like
Eliminates calculation errors
Accurate readings from any angle
Time-saving and waste-reducing
Ideal for various trades
#TOP 2

Starrett 505A-12 ProSite Dial Protractor

505A-12
silver
300mm
Starrett 505A-12 ProSite Dial Protractor Cover
Starrett 505A-12 ProSite 12-Inch Dial Protractor

The Starrett ProSite Protractor is designed to prevent calculation errors, making it easier for you to produce accurate mitre joints and single cuts. With its laser engraved scale, you can set your circular saw to the angle displayed, ensuring 100% accuracy every time. Whether you are working upside down or backwards, rest assured that the reading remains correct. Made from durable aluminium and featuring a Teflon "O" ring, this tool guarantees smooth and precise operation, enhancing your efficiency on the job.

What We Like
Prevents calculation errors
100% accuracy for cuts
Durable aluminium construction
Smooth and precise operation
Saves time and reduces waste
#TOP 3

Starrett CP505A-12 ProSite Combination Protractor Tool

CP505A-12
Black
12" Length
Starrett CP505A-12 ProSite Combination Protractor Tool Cover
Starrett CP505A-12 ProSite Combination Protractor

The Starrett ProSite Protractor is a versatile tool designed for precision in measuring angles. You can easily transfer miter and single cut readings directly to your miter saw, enhancing your cutting accuracy. The protractor feature includes two scales, allowing you to determine angles from 0-180 degrees. Additionally, with the tool face down, you can quickly reference common roof pitches, making it ideal for roofing projects. This combination of features provides convenience and accuracy for all your woodworking needs.

What We Like
Easy angle transfer to saw
Dual scale for precise measurements
Quick roof pitch reference
Durable aluminium construction
#TOP 4

Starrett H33-1224 Protractor Head for Squares

H33-1224
Black
300mm-600mm
Starrett H33-1224 Protractor Head for Squares Cover
Starrett H33-1224 Protractor Head, For Combination Squares, Combination Sets And Bevel Protractors, Forged Hardened Steel, Smooth Black Enamel Finish

The Starrett H33-1224 Protractor is crafted from forged hardened steel, ensuring durability and strength for your measurement tasks. Its smooth black enamel finish not only gives it a sleek appearance but also protects it from wear and corrosion, making it suitable for long-term use. With a blade size of 12" to 24" (300mm to 600mm), it provides versatility for various projects. This protractor head is ideal for accurately measuring angles, helping you achieve precise results in your woodworking or metalworking tasks.

What We Like
Durable forged hardened steel
Sleek enamel finish
Versatile blade size
Ideal for precise measurements
#TOP 5

Starrett C19 Chrome Steel Protractor with Double Scale

Starrett C19 Chrome Steel Protractor with Double Scale Cover
Starrett C19 Chrome Protractor

The Starrett C19 Protractor is a reliable tool designed to help you set bevels, transfer angles, and perform small squaring tasks with accuracy. Its double graduations from 0 to 180 degrees allow you to read angles and their supplementary counterparts easily, saving you from confusing measurements. Made from durable steel, this protractor is built to last and resist wear, so you can depend on it for repeated use. The flat back and lockable blade ensure straightforward handling and precise angle setting for your projects.

What We Like
Double angle graduations
Durable steel construction
Flat back for easy use
Lockable blade for precision
#TOP 6

Starrett C434ME-300 Protractor and Square Set

C434ME-300
Black
300mm
Starrett C434ME-300 Protractor and Square Set Cover
Starrett C434ME-300 Forged, Hardened Square, Centre And Reversible Protractor Heads With Blade Combination Set, Smooth Black Finish, 300 mm Size

The Starrett C434ME-300 Set is designed to save you time with its easy-to-use templates and software. You can create glossy labels that give your files a premium finish, making them visually appealing. This product is also ideal for producing brochures and catalogues, ensuring your materials stand out. The colour laser labels are made from photo quality material, ensuring brilliant colours and sharp text, enhancing the overall quality of your presentations.

What We Like
Time-saving templates available
Premium glossy label finish
Ideal for brochures and catalogues
Brilliant colours and sharp text
#TOP 7

Starrett 11MH-300 Cast Iron Combination Square

11MH-300
Black
Starrett 11MH-300 Cast Iron Combination Square Cover
Starrett 11MH-300 Cast Iron Square Head With Regular Blade Combination Square, Black Wrinkle Finish, 300 mm Size

The Starrett 11MH-300 Square is an essential tool for precise measurements and layout work. Its reversible lock bolt allows you to secure the blade easily, enhancing convenience during use. The integrated scriber enables you to mark lines accurately, making it ideal for detailed woodworking projects. Additionally, the spirit level helps ensure that your measurements are perfectly aligned, giving you confidence in your work. With a hardened steel blade, this combination square is built for durability, ensuring it serves you well for years to come.

What We Like
High durability with hardened steel
Easy-to-use reversible lock bolt
Accurate marking with integrated scriber
Ensures alignment with spirit level
#TOP 8

Starrett 47 Universal Bevel with 6" Blade

silver or gray
Starrett 47 Universal Bevel with 6" Blade Cover
Starrett 47 Universal Bevel, 6" Blade Length

The Starrett 47 Universal Bevel features both offset and straight slots in the blade, allowing you to take precise measurements with ease. Its wide variety of adjustment and angle settings means you can customise it for any project. You can even set it to duplicate an angle from a master, ensuring accuracy in your work. Additionally, the design allows the stock to lie flat on the work or paper, thanks to the recessed head of the clamping bolt, making your tasks more manageable.

What We Like
Versatile angle settings
Duplicate angles easily
Flat stock design
Durable construction
Easy to use
#TOP 9

Starrett 434M 600mm Combination Square with Spirit Level and Angle

434M-600
Starrett 434M 600mm Combination Square with Spirit Level and Angle Cover
Starrett 434M -600 Combination Square 600 mm with Spirit Level, Angle and Zentriermessgerät

The Starrett 434M Combination Square is a versatile tool designed for precision. It features an angle and centring attachment made from hardened steel, helping you achieve accurate measurements and markings. The cast iron protractor pot offers durability and ease when measuring angles. With scale divisions of 1 mm and 0.5 mm on both sides, you can measure with great accuracy. Its 600 mm size makes it suitable for a wide range of tasks, making the Starrett 434M Combination Square an essential addition to your toolkit.

What We Like
Durable hardened steel parts
Accurate dual-scale divisions
Includes spirit level and protractor
Suitable for precise angle measurement
Buying Guide Image
Editor's Notes

During our Starrett protractor research, we found 12 Starrett protractor products and shortlisted 9 quality products. We collected and analyzed 6,362 customer reviews through our big data system to write the Starrett protractors list. We found that most customers choose Starrett protractors with an average price of £203.59.

The Starrett protractors are available for purchase. The top 9 picks range in price from a low of £74.00 to a high of £448.00, find the one that fits your budget.

Written by
Jennifer Fraser Avatar

Jennifer Fraser is a licensed contractor specializing in sales, maintenance, and kitchen, bathroom, and home appliances, tools, and utilities. She owns a store in Leeds where you can get any home and tool appliance. Jenny has a degree in literature, but she combines her knowledge and experience with her degree to publish DIY articles on solving home appliances issues to keep up the family enterprise.