Metric vs. other measurement systems - chart

[mklotz]

While I wouldn't recommend quoting weights in units of nickels, the fact that a nickel weighs 5 grams is handy for impromptu scale checking, not to mention the ease of remembering that 5 cents weighs 5 grams.

[Toolmaker51]

While I wouldn't recommend quoting weights in units of nickels, the fact that a nickel weighs 5 grams is handy for impromptu scale checking, not to mention the ease of remembering that 5 cents weighs 5 grams.

Relatable concerning reference weights. The famous author, especially on subject of reloading, Dean Grennell, told how his first powder scale was home made. His efforts at calibration were via aspirin tablets, bottle labeled as 5 grains.
Not so, 5 grains was weight of active content, less of course than complete tablet. He was lucky to not overcharge handgun cartridges with energetic powder like Hercules Bullseye, a favorite target composition. In .38 Special, the standard was 2.7 grains, a bit more with Unique.
BTW one pound = 7000 grains, 1 gram is 15.4323583529 grains...