Show HN: USA.css – units set in inches, 1776 bytes

Re:Show HN: USA.css – units set in inches, 1776 bytes by cjsawyer on Saturday July 04, 2020 @05:22PM (#23735004)

Engineering and machining specifications are usually in 0.001” and referred to as thousandth’s or “thou’s”. Tools like wrenches or drill bits use fractions in the form x+1/2^n like 2 1/2 == 2.5”. It goes down to 1/64, I think.

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Re:Show HN: USA.css – units set in inches, 1776 bytes by userbinator on Saturday July 04, 2020 @05:45PM (#23735118)

They also speak of tenths which are 0.0001" units, i.e. "tenth of a thou". This jargon tends to confuse those who are new to it, but has been around for over a century.

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Re:Show HN: USA.css – units set in inches, 1776 bytes by DerekRobot on Sunday July 05, 2020 @04:52AM (#23737424)

It's a really well-sized unit for that kind of work. I know exactly what a thou is and how to keep things in spec, but I'm lost using mm.

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Re:Show HN: USA.css – units set in inches, 1776 bytes by beojan on Sunday July 05, 2020 @06:20AM (#23737717)

Thous, and tenths even more so, are more akin to microns in metric.

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