Every professional that deals with stuff that needs around 1mm precision uses mm. Metal roofing, gutters, any machining, etc. It is to prevent ambiguity. I used to build roofs and for like wooden beams we used meters and cm, but that was because a couple mm here and there rarely ever mattered. All in all using mm is usually the best choice.
I’ve been a machinist for over 20 years. Just no. You get specs from the customer, and yeah the tolerances are usually in mm. However, listing dimensions in thousands of mm makes no sense. The tolerances are always specified. If it wasn’t for NDA, I could show you a print from Siemens Medical that shows this.
Every professional that deals with stuff that needs around 1mm precision uses mm. Metal roofing, gutters, any machining, etc. It is to prevent ambiguity. I used to build roofs and for like wooden beams we used meters and cm, but that was because a couple mm here and there rarely ever mattered. All in all using mm is usually the best choice.
What professional area? Because I don’t recall ever seeing listings of thousands of mm.
I’ve been a machinist for over 20 years. Just no. You get specs from the customer, and yeah the tolerances are usually in mm. However, listing dimensions in thousands of mm makes no sense. The tolerances are always specified. If it wasn’t for NDA, I could show you a print from Siemens Medical that shows this.