Review on 🔍✅ Accurate Calibration Weights for American Weigh Scales - 10mg and 500mg by Rick Ross

This set of weights exceeded my expectations for accuracy given the price. I'll be the first to say this thing absolutely sucks. Round weight holders aren't bad, but square weights under 1g really need better coverage. The standard cover for the holders does not cover the entire hole. As such, smaller weights (particularly those under 100mg) tend to fall out of their compartment and fly around the fuselage. The lower part of the body consists of two glued plastic parts, but there is a gap between them. When I first put that set of weights away, I wasn't aware of this issue. The next time I opened the box, the 1mg weight mysteriously disappeared and a few other weights were scattered around the box. And so there was a 1 mg weight at the bottom of the box, between two glued pieces of plastic. I was only able to get the cargo using a powerful rare earth magnet (unhitching the crate would also work). I suspect that's why some of the other reviewers are losing their lower weight. To prevent this from happening again in the future, I designed a 3D printed lid that protrudes slightly into each compartment. The OpenSCAD code is at the end of this overview. My part is printed a little tight, so I'd recommend trimming it down a few percent if you're printing it yourself. I'm also not exactly sure if each compartment needs a lid lowered into it - a flat lid might be perfectly acceptable. Now we come to the part of the review that I'm sure the majority came here to see. the actual weight of each such load. For weighing I used my Mettler Toledo AE 260 scale. This is an older model, over 20 years old at the moment but is still accurate and accurate. There's a built-in 100g calibration weight, but I was concerned it might have lost some weight through corrosion over the years. I ended up buying an ASTM Class 1 10 gram calibration weight, and after calibration with an internal 100 gram weight, my scale measured between 9.9999 and 10.0000 grams. Essentially: The weights I have here are accurate to 0.1 mg, with the caveat that they could potentially be 0.1 mg below the actual weight according to an ASTM Class 1 calibrated weight. Theoretical weight and my measured weights are the same as follows: 50G: 50.0095 G20 - 19.9976 G20 - 20.0016 G10 - 10.0052 G5 - 5.0014 G2 - 1.9983 G2 - 2.0011 G1 - 1 .0015 G500MG - 499.9 MG200 - 10.0.1 mg 0.5 mg see, the actual weight is relatively close to the declared weight. They are not perfect and deviate slightly from many international standards. However, these weights are not intended for high precision lab work - they are intended for the home user. While I'm sure there are, I don't currently know of any home use where the 10mg error in 50g is a deal breaker (frankly, it's even perfect for many general lab uses). As long as potential buyers of this weight need to be aware of the intended user base, I think this is a great set. Personally, I only use this to make sure my scale is getting the correct readings across the range, and it's great for that. Of course I would have preferred a full set of ASTM I calibrated weights with a nice carrying case, but I don't want to spend $500-1000 on a set of weights. just my special set of weights. I almost guarantee your set will be different. When you buy an $80 calibrated ASTM weight, you're paying to have it be exactly within 0.xxx mg of the advertised weight. With this great value kit, all you have to know is that the weight is within a few percent of the advertised weight. Some of them will be almost perfect, but many will differ significantly. 20.5, 5]); translate([31.5, 0, 0]) cube([13.5, 20.5, 5]); translate([46.75, 0, 0]) cube([12.5, 20.5, 5]); translate( [61, 10.5, 0]) cube([7.75, 10, 5]); translate([70, 10.5, 0]) cube([7, 10.5]); translate([79, 10.5, 0]) cube( [5.75, 10, 5]); translate([86, 10.5, 0]) cube([5.75, 10, 5]); translate([93.5, 10.5, 0]) cube([5.8, 10, 5 ]) ;translate([61, 0, 0]) cube([14.5, 8.75, 5]);translate([77.5, 0, 0]) cube([10.1, 8.75, 5]);translate([89.5, 0, 0]) cube([10, 8.75, 5]); }translate([0,1,0]) indentations(); translate([0,0,1]) cube([99.5,23.5,5] ); translate([25,5,3]) Cube([8,12,10]); translate([67,5,3]) Cube([8,12,10]);