Shinwa H101-C 300 mm Rigid "Zero Glare" Metric Machinist Ruler/Rule Scale .5 mm & mm Markings

I measured things as part of my jobs for my whole life (too many years to say). Mostly used ft. inches. and down to less than one ten thousandth of an inch. I never had any affection for the metric system but have recently been laying out hole patters in MM's to be drilled on a drill press. I got so sick of multiplying by .03937 that I broke down and bought my first metric scale. Now I just use the metric number its much easier. In precision work the conversions will continue as machinery is still in imperial measurements but I am so glad to have bought this. Its easy to read and good quality.

Very nice quality. Rigid, not flexible like some cheap rulers. Good price for a quality ruler. I needed a Metric ruler since pretty much all 3D printing use the Metric system. I've been converting to imperial for years and finally broke down. 😃

If you are looking for an excellent ruler, standard or metric, this is it. I have both the 300 mm and 600 mm. Laser etched numbers and easy to read. Reasonably thick stainless steel, not like the flimsy thin ones at the big box store. These are what I reach out for at my table saw to set the fence distance from the blade (instead of my measuring tape). Awesome product.

The graduations are clear and consistent, easy to read. The ruler is thinner than some but not floppy or anything, solid quality all around.

I have several rules, tape measures, and other measuring devices around my home and shop, but they are all in standard units (inches). When I started working on Japanese gasoline engines, and especially when I began using a 3D printer, I found myself constantly having to express and measure units in metric units (mostly millimeters). I bought this ruler specifically because it has 0.5mm precision, the ruler is hardened stainless steel instead of plastic, and it comes in a protective plastic sheath to reduce wear on the markings and lettering.On the back of the ruler are some tables to convert inches to millimeters, as well as a tap conversion table for screws/tap diameters and threading.Unless you use this thing to swat flies and pry open things, it should last a lifetime, and when the United States finally switches to Metric (ha!) you'll be ready. Great product!

Perfect tool!

Nice and sturdy. Measurement starts right from the edge, so it is good for precision measurements where the ruler has to butt up against the object.... but honestly... why round the one end? How is that useful? Why not allow us to measure from either end? You could have flattened the round end and hand inches and mm... but you didn't... why? Because you wanted to sell us two rulers instead of one? I really like the durability of this thing, but I had to remove a star for that blasted, rounded end. It is just irritating.

Laser sharp markings ,and the satin finish is glare free and easy on the eyes