I am working on another renovation and doing a lot of measuring, cutting and placements. I have metric on my Fat Max tape and I just stumbled into using it. Those boys might be on to something there.
Example I have a wall 6 feet 6 3/4" long and I want 4 evenly spaced lights on it (5 equal intervals counting the ends) I could convert this all to 1/4" segments and divide that, then reconvert back to inches (like they taught you in school) or I could just say this is 200 cm, divided by 5 so I measure 40 cm between each light and off I go. At a certain point I am really only using the metric scale as an arbitrary decimal measurement but it does work pretty neat. Since things like "1/2" plywood, trade marked '15/32" is really 12mm this transition may even start to get easier.
An old draftsman (modified for carpenters) trick is to hold your tape at an angle so that the overall length is some even number that you can divide easily. Mark those points along the tape, then use a plumb line to transfer those makrs to the top of the wall. 80" would work nicely in your example.
One problem with metric in Canada is that so much comes from the US. I once put up pegboard for store shelving that hung on rails on the wall. The pegboard was metric and the shelves were 4 feet, so each pegboard had to be cut by a few millimeters.
Next, the writers of the Canadian Electrical Code did a soft conversion. A hard conversion is when the gas is sold by the litre. a soft conversion is when devices in boxes that are greater than 2.54 centimeters (1 inch) deep have the volume calculated in litres. Try measuring .4 of a millimeter.
Be careful what you wish for. You could be carrying two sets of sockets and hex wrenches and screwing up measurements that need to be converted.
#192381 - 02/11/1001:35 PMRe: US guys, do you use metric yet
And the reverse is true here in France where metric measurements were "invented". Most board materials, esp. US or Canadian softwood ply, come in 1220 x 2440 [8'x4'] sheets, but are 'metric' thicknessed! The UK went metric in the late sixties, including our money, but we still officially use the pint, the mile, yards, horsepower and a few others there. The money was more difficult to get used to than you can imagine, and forty years later, I still confuse my kids by talking in shillings, tanners, bobs, florins, pounds, tuppence, new-pence, stones, euros and both old and new francs- plus stones, bushels and fluffteenths.
Most UK tapes have both imperial and metric markings and I use both with ease, being an adult when we changed over, but also because whenever you want to measure in an awkward corner the markings are invariably on the wrong side of the tape! Imperial is far from dead, because it's designed around practical human units. Here in France over 200 years after forced metrication of everything, you can still buy market vegetables in livres, and buy a tv in pouces.
In a sense, the USA is metric, in that the official standards refer back to the metric system. Like "an inch shall equal 2.54cm".
Nowadays, stuff in the supermarket has metric measurements alongside the English units. Which makes things easier for me, as I can never remember how many oz's to a pound (is it 12 or 16?) or what a fluid oz is, or how many to a half gallon. And I grew up in the USA. With grams or liters, it's easy.
The US has been the biggest obstacle in getting the known universe to adopt metric. Once we get you to accept the rest of the world has changed and that your steadfast adherence to an archaic English system (wasn't there a revolution on following English standards?) you and the rest of the work will save money and it will be easier to sell American Cars in Europe.
We tried to go full metric in the 70's but the huge amount of US manufactured goods stifled that.