Review on Rice Lake Stainless Precision Metric Test, Measure & Inspect for Scales & Balances by David Skyline

This 20mg test weight is exactly what I was looking for to calibrate my milligram scale. It's not particularly good, but the scale is to blame, not the test weight. Warning: This thing is so small you'll definitely want to use tweezers (obviously plastic tweezers are preferable). And you can lose it forever if you drop it on the carpet. By weight, this is probably the most expensive thing I've ever bought: $11 for a 20 milligram weight is $550 per gram. Deal with it!