Question 1

What is a drachm?

Accepted Answer

A drachm (dram) is 1/16 ounce = 1.77 grams (avoirdupois) or 3.89g (apothecary). Used in old pharmacy.

Question 2

Is drachm the same as dram?

Accepted Answer

Yes, drachm is the British spelling of dram. Avoirdupois dram = 1.77g. Apothecary dram = 3.89g.

Question 3

Is there a difference between mass and weight?

Accepted Answer

Yes! Mass (kg) is amount of matter, constant everywhere. Weight (newtons or pounds-force) is gravitational force on mass, varies by location.

Question 4

Why do jewelry and precious metals use different units?

Accepted Answer

Troy system (troy ounces, pennyweights) has been used for precious metals since the Middle Ages. 1 troy oz = 31.1g vs 1 regular oz = 28.35g.

Drachm to Grams Weight Converter - Free Online Tool

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