Best Starrett Protractors of 2025

Jennifer Fraser Avatar
Jennifer Fraser
Last Updated: 1 Feb 2025

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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 H33-1224 Protractor Head for Squares Cover #TOP 2
Starrett H33-1224 Protractor Head for Squares
ftb score rating icon 9.8
Starrett 11MH-300 Cast Iron Combination Square Cover #TOP 3
Starrett 11MH-300 Cast Iron Combination Square
ftb score rating icon 9.6

Top 10 Starrett Protractors

#TOP 1

Starrett 505A-7 ProSite Protractor for Accurate Cuts

505A-7
Silver
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 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 3

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 4

Starrett C183 Steel Protractor with Rectangular Head

C183
Starrett C183 Steel Protractor with Rectangular Head Cover
Starrett C183 Steel Protractor With Rectangular Head

The Starrett C183 Protractor is an essential tool for anyone needing precision in their work. With double graduations from 0-180 degrees, you can read angles directly and easily, saving you time and reducing errors. Its durable steel construction ensures longevity, making it a reliable choice for repeated use. The flat back design allows for straightforward measurements, while the lock nut feature keeps the blade securely in place, enhancing your accuracy and efficiency in various tasks.

What We Like
Easy angle reading
Durable steel construction
Flat back design
Secure lock nut feature
Long-lasting tool
#TOP 5

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 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 505P-7 Protractor and K53M-350-S Square

7" Yellow & White
Starrett 505P-7 Protractor and K53M-350-S Square Cover
Starrett 505P-7 Miter Saw Protractor & K53M-350-S Try Square

The Starrett Protractor and Try Square are essential tools for precision in carpentry and construction. The protractor helps you prevent calculation errors when creating mitre joints or making single cuts, ensuring that your readings are always accurate, even when viewed upside down or backwards. You can easily set your circular saw to the angle indicated on the laser engraved scale, guaranteeing 100% accuracy. Made from durable hardened plastic, it offers a smooth operation similar to aluminium models, making it a reliable choice for tradespeople.

What We Like
Accurate readings in any position
Easy angle setting for saws
Durable hardened plastic construction
Ideal for various trades
#TOP 8

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 9

Starrett 12ME-300 Non-Reversible Bevel Protractor

12ME-300
Starrett 12ME-300 Non-Reversible Bevel Protractor Cover
Starrett 12ME-300 Non-Reversible Bevel Protractor, Black Wrinkle Finish, 300mm And 11-3/4" Size

The Starrett Bevel Protractor is designed for precise angle measurement. Its non-reversible design allows for direct reading of angles and supplementary angles, making it easier for you to take accurate readings. With double graduations ranging from 0 to 180˚, you can effortlessly read angles above or below the blade. The blade measures 12 inches (300 mm) and features clear graduations on both sides, ensuring you have the right measurements at hand. Plus, the spirit level helps you confirm if your reference surface is level, enhancing your overall accuracy.

What We Like
Easy angle measurements
Clear double graduations
Durable cast iron head
Tempered steel blade
Includes spirit level
#TOP 10

Starrett 47 Universal Bevel with 6" Blade

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
Buying Guide Image
Editor's Notes

During our Starrett protractor research, we found 13 Starrett protractor products and shortlisted 10 quality products. We collected and analyzed 6,005 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 £201.41.

The Starrett protractors are available for purchase. The top 10 picks range in price from a low of £33.00 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.