Mr. Pen- Machinist Ruler, 4 Pack (6, 8, 12, 14 inch), Metric & Millimeter Ruler, 1/64, 1/32, mm and .5 mm, Stainless Steel

Best machinist rulers out there, and accurate

Quite sturdy and so much better than I expected for the price payed. Excellent addition to my tool box for accurate measurements.

I’m not exactly sure sure how they have achieved this. I’ve checked each rule and they are as far as I can tell the accuracy is perfect, I can’t give a precise accuracy because I don’t have specialist equipment. I feel bad saying maybe I got lucky here and quality is inconsistent, but I only say that because I would be impressed to get ONE rule at this price that’s accurate. Bravo

They do a job for a bargain price. What's not to like?

Good set of rulers. Cheap and recessed markings so less likely to rub off. Would buy again.

Great quality, easy to read, but edges need stoning or filing as very sharp

Good product and great variety of sizes, used at work everyday and never had an issue with it bending or denting the sides. A marker always wipes off easily

Perfect set of rulers. They have every measurement i could possibly need.

Note that the largest ruler does come with a sleeve just like the others; I just lost it. These four rulers are nice, made from stainless steel. The edges are sharp enough to slice you, which is good for accurately tracing lines. They come in two lengths and two widths. All measurements are in millimeters: The first is 355.50 long, 26.25±0.05 wide, 0.91±0.02 thick. The second is 304.50 long, 26.20±0.05 wide, 0.91±0.01 thick. The third is 203.00 long, 19.37±0.01 wide, 0.90±0.01 thick. The fourth is 152.00 long, 19.16±0.01 wide 0.90±0.01 thick. All measurements are approximate. All of them appear to be almost perfectly flat (which is impressive), and straight on the business edge. The markings are thin enough that you don't lose accuracy, and it is easy to precisely measure up to 500 microns. Even further, I found it easy to eyeball accurately down to 100 microns because the lines are so thin, straight and sharp. I also like the font. One issue you may note is that the ends are a cut a little bit rough. They have a slight bevel where a guillotine severed the length. Additionally, they do not appear to be perfectly perpendicular with the longest edges, and have a slight variance. This variance means that if you're trying to measure from the zero-end, your measurements will be off slightly. I have a picture attached with the markings lined up which illustrates this issue. It is more noticeable from the imperial side on the 300mm long ruler, which means that particular ruler has a slight offset on that specific side. As for the orange and transparent sleeves that they come with, I have a complaint. These are almost not worth keeping, but only almost. You can't hang them by a nail through the hole because the cut is on the wrong end (gravity), and this makes me wonder why the hole is there in the first place. The tops are also heat-sealed, which means that you can't remedy the problem by sealing the bottom and opening the top. I understand that these sleeves are almost definitively just for protecting the markings and brush texture during transit, and they are still useful for this purpose. Nevertheless, the material is thin and the design cuts prevent them from being more useful. It would have also been nice if cardboard outer-sleeve were more durable, as I would like to keep them in this. There is no easy way to open the package without ripping this packaging. All in all, great rulers for the price. Regardless of my complaints, this is still a 5/5 star item.

Si se ven bien. El acabado de los bordes un poco filoso. No tanto como para cortarse los dedos (creo).

awesome

These rulers are excellent quality with well made marking that should last a long time. I checked some of the measurements against a very accurate caliber and they are spot on. The ends are exactly 1 unit from the first appearing mark, thus it is accurate to use for measuring with the end flat against something.