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 Tools Combination Square, Metal-Body, 16-Inch (1794471), Blue

IRWIN Tools Combination Square, Metal-Body, 16-Inch (1794471), Blue

Product ID: 7518328

Details

Brand
IRWIN
Color
Blue
Graduation Range
1/8 inches
Material
cast zinc
Style
Regular Square

🔩rust-proof stainless steel blade

⚖️16-inch precision length

🛡️durable cast zinc body

S$58

Duties & taxes included

In stock

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Description

🛠️ Elevate your craft with precision and durability that never quits!

BUILT TO LAST - Heavy-duty cast zinc body delivers lasting durability and a premium feel
RUST NOT HERE - Stainless steel blade resists corrosion, ensuring longevity on every job
PRO LEVEL COMFORT - Balanced heft and ergonomic design for fatigue-free, all-day use
VERSATILE ANGLE MASTER - Includes T-Bevel for depth gauging and seamless angle transfers
PRECISION YOU CAN TRUST - Accurate 90° and 45° angle measurements for flawless projects

The IRWIN Tools 16-Inch Combination Square features a rugged cast zinc body and a rust-proof stainless steel blade, delivering precise 90° and 45° angle measurements. Designed for professionals and DIYers alike, it includes a versatile T-Bevel for depth and angle transfers, backed by a limited lifetime warranty for dependable performance on every project.

Specifications

ASIN	B005XUHIUM
Best Sellers Rank	#2,283 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #10 in Carpentry Squares
Brand Name	IRWIN
Color	Blue
Customer Reviews	4.7 4.7 out of 5 stars (13,503)
Global Trade Identification Number	00038548995328
Graduation Range	1/8 inches
Included Components	METAL COMBINATION SQUARE 16"
Item Dimensions L x W	16"L x 5.5"W
Item Type Name	METAL COMBINATION SQUARE 16"
Item Weight	16 ounces
Manufacturer	IRWIN
Material Type	cast zinc, stainless steel
Model	1794471
Number of Items	1
Number of Packs	1
Part Number	1794471
UPC	038548995328 732454248843 767654415610
Unit Count	39.37 Feet
Warranty Description	Limited lifetime

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