“Standards for the exact length of an inch have varied in the past, but since the adoption of the international yard during the 1950s and 1960s the inch has been based on the metric system and defined as exactly 25.4 mm.”
“Standards for the exact length of an inch have varied in the past, but since the adoption of the international yard during the 1950s and 1960s the inch has been based on the metric system and defined as exactly 25.4 mm.”
Signs are the tip of the iceberg.
Every nut and bolt being made and all the tools for them.
Every tool that does any measurement.
Every scale.
Every gas pump.
etc. etc. etc.
Hey will you pass me that 3/16ths? No wait, make that a 3/8ths. No wait, let’s try one size up 7/16ths… [kill me]