📐 Measurement Reference Library
Quick-access reference tables for measurement standards used in engineering, fabrication, printing, and everyday work. Each table includes related unit converters and charts.
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Metric Prefixes
All SI prefixes from yotta (10²⁴) to yocto (10⁻²⁴) with symbols and factors.
📄Paper Sizes
ISO A-series, B-series, and US paper sizes in millimeters and inches.
🔌Wire Gauge (AWG)
American Wire Gauge reference: diameter in inches and mm, resistance per 1000 ft.
🔩Drill Bit Sizes
Fractional, letter, and number drill bit sizes with inch and millimeter equivalents.
🔧Thread Sizes
UNC, UNF, and metric thread sizes with pitch, diameter, and tap drill sizes.