18" Anodized Aluminum Straight Edge Tool with .001 Tolerance Precision Edge, Check Straightness On Metal Surface Tops & Machinery, Layout Tool for Marking and Scribing Lines

Packaged extremely well. Super straight. Very high quality.

If you need a straight edge, this is nice. It's thick so it sits on it's edge nicely without falling over. It's good quality, it functions without a hitch and it is accurate. I expect this to last for a long time.

Took a gamble on this due to shipping concerns. So, wanted to mention that this was pre-packaged from Fulton: it came from the factory with rubber sleeves on both ends of the bar, was placed inside a sturdy tube that had end-plugs, then shrink-wrapped, all before going in Amazon's box. Shipping damage seems to be common in these from other vendors, but Fulton took steps to avoid this. I don't have a surface that I know is true, but it appears to be straight. I do have something similar coming in a week, so will compare and then update here (update: it is indeed straight)

I use it for my motorcycle engine to check for warpage and things like that.

Perfect for automotive tech work. To check flatness on cylinder heads and engine blocks.

It seems pretty good. I was able to identify a warped header flange with it

Worked great to check my engine for flatness

This supposedly straight edge almost made me ruin my engine block. The ends on this straight edge are higher than the middle. As you can imagine it causes everything to appear to have a gap. Absolute zero stars. Horrible quality. Inaccurate! Not straight!

Perfectly straight. Compared it to another straight edge and it was perfect.

Expensive but a accurate