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Nope. Half an inch is 12.7mm. That two tenths of a millimeter is important! Sometimes! ;) I can use either system, but I'm math-challenged despite decades of study, so I use a calculator regardless. And the only time I needed to deal with 1/128" was back when I got my first Vernier caliper. What I hate is things that mix the two systems. Chevrolet vehicles, for example. BASTARDS! :) Had to change out the starter on my mini-van this week. Most everything on it is metric except the starter bolts.?

Once upon a time, digital calculators were expensive. My first was a TI SR-51-II, and I paid $100 for it. That was about a third of my monthly paycheck then. When my teaching career ended, a bit over a decade ago, I could get a MUCH more powerful calculator for $1, with more scientific functions. And the TI-86 graphing calculator was going for about $100, then. It used a processor based on the Z-80 chip that ran my first appliance computer, the TRS-80 Model 1, and had the same graphics capability. Unlike the TRS-80, the TI-86 fit in the palm of my hand. Now I have a cheap Android phone, a MOTO G7 Supra. It has 32gigabytes of storage, and 2gigabytes of program memory. MUCH better graphics capability, too. I have a .5tb or 500gb micro-usb card in it for additional storage. And a scientific calculator app that will about everything BUT graphing. Including all the normal conversions. And another app that will display dwg files.?

THERE IS NO EXCUSE FOR SUCH LACK OF PRECISION!? ;)

Going through a set of drawings and trying to convert every dimension would be tough, though. Which means we need a means of converting on the fly. Digital calipers, anyone? ;)?

Actually, I'll bet that if there is a method that can be used, someone is using it. I actually prefer to use the Imperial system, as modified in the USA, but can get along fine in Metric. Lived for a tad over 5 years in Germany, and 3 in Turkey. I have bought gasoline in litres, and assorted foods in kilograms & grams, so I can get by.?

Bill in OKC

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