What reasons are there to get a Starrett instead of this one?

I have both this combination square and a Starrett. The Starrett is, of course, much more expensive; however, the Starrett is more accurate and better made. For woodworking, there are some things for which accuracy is very important. The Irwin square I have is out of square by about 1/128" over its length. If I use this to set the angle of my table saw or to make sure my miter gauge is true. 1/128" over 12 inches may not seem like much but it's enough to cause parts I cut to not fit, particularly cutting a wide board. The Starrett combination square is one of the few tools that I use every day in my shop. I expect the Starrett to last my lifetime. In fact, I have a Starrett protractor head and rule that I inherited. It's decades old, but it's completely serviceable and a pleasure to use.

Does this have metric markings as well?

one side is in units of 1/8th inch along one edge and 1/16th inch along the other edge on the ‘flip side’ it in units of 1/32nd inch along one edge and in metric i.e. centimetres (cm) & millimetres (mm) along the other edge it is a a good tool - well made and good value for the money

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IRWIN Combination Square, 12”, 45-90 Degree Marking, Stainless Steel (1794469)

IRWIN Combination Square, 12”, 45-90 Degree Marking, Stainless Steel (1794469)

Product ID: 7518277

Details

Brand
IRWIN
Color
Blue
Graduation Range
1/16 Inches
Material
Blend
Style
Regular Square

📏12-inch stainless steel blade

📐Precision 45° & 90° marking

⚙️Durable cast zinc body

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900011₫

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Details

Brand
IRWIN
Color
Blue
Graduation Range
1/16 Inches

Description

📐 Elevate your craft with precision that commands respect.

HEAVY DUTY BUILD - Robust cast zinc body delivers industrial strength without the premium price tag.
MULTI FUNCTIONAL GAUGE - Use as a depth gauge or transfer measurements with confidence and ease.
VERSATILE ANGLE MASTER - Effortlessly mark perfect 45° and 90° angles for flawless cuts and layouts.
PRECISION MEETS DURABILITY - Rust-proof stainless steel blade ensures long-lasting accuracy on every project.
TRUSTED BY PROS LOVED BY MAKERS - Top-rated tool with 4.7 stars and over 13,000 reviews—join the community of precision-driven creators.

The IRWIN 12” Combination Square blends a rust-proof stainless steel blade with a durable cast zinc body, delivering precise 45° and 90° angle markings. Designed for professionals and serious DIYers, it doubles as a depth gauge and measurement transfer tool. With over 13,000 glowing reviews and a top rank in measuring tools, it’s the affordable, reliable choice for accuracy on every job.

Specifications

ASIN	B005XUHIBG
Best Sellers Rank	#1,806 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #47 in Measuring & Layout
Brand	IRWIN
Brand Name	IRWIN
Color	Blue
Customer Reviews	4.7 out of 5 stars 13,383 Reviews
Global Trade Identification Number	00038548995304
Graduation Range	1/16 Inches
Included Components	1794469 - METAL COMBINATION SQUARE 12"
Item Dimensions L x W	12.4"L x 5.51"W
Item Thickness	2 Inches
Item Type Name	METAL COMBINATION SQUARE 12"
Item Weight	14.4 ounces
Manufacturer	IRWIN
Material	Blend
Material Type	Blend
Model	1794469
Part Number	1794469
Product Dimensions	12.4"L x 5.51"W
Style	Regular Combination Square
Style Name	Regular Combination Square
UPC	038548995304
Unit Count	1.0 Count
Warranty Description	Limited lifetime

Reviews

H**R

26.03.2017

I**R

25.04.2026

L**N

9.05.2025

L**L

25.11.2025

C**K

19.02.2026

S**N

30.03.2020

P**.

2.05.2026

S**I

3.09.2024

L**S

5.03.2025

B**A

23.11.2022

F**I

12.09.2024

M**.

15.04.2026

A**N

4.05.2016

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900011₫

Duties & taxes included

In stock

Sold byAmazon VietnamDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Vietnam.

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TrustScore 4.5 | 7,300+ reviews

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