📐 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.
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.
🔋Battery Sizes
Dimensions and voltages for AA, AAA, C, D, 9V, coin cells, and 18650 lithium cells.
📺TV Sizes
Real width and height for 32–98 inch screens with recommended viewing distances.
🪵Sandpaper Grit
Grit-by-task guide with the CAMI (US) to FEPA (P-grade) conversion table.