410mm in inches

410 mm equals 16.14 inches (410 ÷ 25.4 = 16.1417…). In tradie terms, that’s about 16 1/8 in, close enough unless you’re machining a Swiss watch. If you want tidy decimals, use 16.14 in; if you’re working in eighths, 16 1/8 in will do the job. Measure twice, convert once, and save the cursing for the moment you drop the socket into the engine bay.