The IRWIN 1794469 Combination Square is built for precision and durability, featuring a 12-inch rust-proof stainless steel blade and a tough cast zinc body. According to the manufacturer's description, it has scales for both 45 and 90-degree markings, which come from precision-etched lines that are easy to read and hold up well over time.

In our research, this square is valued for making accurate straight lines, which is a big plus for woodworking and carpentry. The etched measurements are clear and stay visible even with lots of use. It also has a level bubble, which can be really handy when you want to make sure things are level and straight.

There have been a few reports of alignment issues when people first use it, with some noticing that it might need a bit of recalibration to get perfect. This seems to be a rare issue, but it's wise to double-check its alignment as soon as you get it.

All in all, the IRWIN 1794469 is praised for its sturdy construction and dependable performance. Even if you might need to tweak the alignment occasionally, its strong build and clear, durable markings make it a solid tool for precise marking in various projects.

The IRWIN 12-inch Combination Square (model 1794469) is pretty popular among both DIY folks and pros. It's known for being sturdy and affordable. Our research shows it has measurement scales on all sides of the ruler—three sides with imperial (⅛, 1/16, and 1/32 inches) and one side with metric in millimeters. This dual system can be handy if you switch between metric and imperial measurements.

That said, the metric measurements might not always be the best fit if you're after metric precision. Some folks mentioned that the metric scale's position can be a bit tricky for precision tasks like scribing or measuring depth, which could be a concern if you rely on metric measurements a lot.

Apart from that, people really like its durability and the clear, etched markings. It's made with strong materials, which makes it reliable—a big plus for woodworking tools where you need accurate measurements.

So, overall, the IRWIN Combination Square is a good option, especially if you need something versatile for both measurement systems.

But if your projects require precise metric-only tools, you might want to think about whether this meets your needs or look at some other options more focused on metric specs.

It's a solid, budget-friendly choice for woodworking as long as its metric layout works for you.

The IRWIN 1794469 12-inch Combination Square seems to be a reliable and high-quality choice, especially for woodworking and DIY projects. It's known for being pretty accurate and versatile, which is always a plus.

The tool is built with a stainless steel blade and a sturdy cast zinc body. This combo not only helps fight off rust but also keeps its accuracy consistent over time. The manufacturer's description points out that it's great for making precise 90-degree and 45-degree markings.

When it comes to reading the measurements, this square does pretty well. Based on our research, many folks find the etched markings on the blade easy to read, even in low light or tight spaces. Plus, the square’s weight and solid locking mechanism help keep measurements stable, which is super handy for both woodworking and general construction.

That said, some people have noticed minor precision issues when they first get the tool. It might need a quick calibration at the start, but our research suggests it's a minor thing. It's worth checking it out when you get it to ensure you're getting spot-on measurements.

Overall, the IRWIN 1794469 12-inch Combination Square seems to be a solid and dependable tool. Just remember, a little initial tweak might be necessary to get it exactly where you want it.