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If you start from scratch, sure. But if you're e.g. repairing existing equipment, then the customary and SI units are incompatible. Say, a 1/4 inch bolt head i
by jabl 6y ago
If you start from scratch, sure.
But if you're e.g. repairing existing equipment, then the customary and SI units are incompatible. Say, a 1/4 inch bolt head is too large for a 6 mm wrench, but too small for a 8 mm (which is typically the next step up from 6mm).
For this reason I had to buy some wrenches in customary units to fix a lawnmower engine.
- wolfgke 6y ago> But if you're e.g. repairing existing equipment, then the customary and SI units are incompatible. Say, a 1/4 inch bolt head is too large for a 6 mm wrench, but too small for a 8 mm (which is typically the next step up from 6mm). Where is the problem? Buy a 6.35mm wrench for your 6.35mm bolt head.
- StavrosK 6y agoThen you're left with these wonky sizes that are only there because they were designed to be a round number in another unit.