Why Is Alcohol Measured by Proof?

What does “proof” actually mean in terms of alcohol content?

Standard Drink

Gunpowder Proof - The Explosive Origin of the Alcohol Proof System

ELI5: Why is alcohol measured in percentage/proof instead of actual volume in mg like caffeine and other substances? : r/explainlikeimfive

Alcohol proof - Wikipedia

What Does the Proof on Alcohol Mean? Examples, Low vs. High

Alcohol by volume - Wikipedia

Why Is a Liquor's Proof Double Its Percentage Alcohol by Volume?

Moonshine Proof [What It's All About and 3 Ways to Test & Determine Proof]

Beer 101: An Intro to ABV, ABW, and High-Point Beer

How to Use a Proof & Tralle (Liquor) Hydrometer

High-Proof Spirits: Essentials You Need to Know

Why is Alcohol Measured in Proof ? What does the number mean?

190-Proof Virgin Denatured Alcohol (32oz, 1) : : Industrial & Scientific

How does one 99 proof shot compare to a single 5 percent ABV beer? - Quora

Alcohol Proof & Alcohol by Volume: Definition, Explanation