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..  Ohm's Law: Ohms = Volts/Amperes ( R = E / I ) Amperes = Volts/Ohms ( I = E / R ) Volts = Amperes x Ohms ( E = IR ) .. .. .. ..  INDUSTRY ABBREVIATIONS cm = centimeter cu. = cubic ft. = foot gl. = gallon (US) gr. = gram Imp. = Imperial in. = inch kg. = kilogram km. = kilometer l. = liter lb. = pound m. = meter mi. = mile oz. = ounce qt. = quart std. = standard US = United States yd. = yard      .. ..  LENGTH MEASUREMENTS     Common Usage Reciprocal Value     1 ft. = 12 in..   1 in. = 0.0833 ft.     1 yd. = 3 ft.   1 ft. = 0.3333 yd.     1 rod = 5.5000 yd.   1 yd. = 0.1818 rods     1 furlong = 40 rods   1 rod = 0.0250 furlongs     1 mile = 8 furlongs   1 furlong = 0.1250 mi.     1 mi. = 5,280 ft.   1 ft. = 0.000189 mi.     1 mi. = 1,760 yd.   1 yd. = 0.000568 mi.     1 fathom = 6 ft.   1 ft. = 0.1667 fathom     120 fathoms = 1 cable   1 cable = 0.00833 fathoms     1 league = 3 mi.   1 mi. = 0.3333 leagues     1 nautical mi. = 6076.11 ft.   1 ft. = 0.000165 natical mi.     1 hand = 5 in. (equestrian)   1 in. = 0.2000 hands           METRIC     1 in. = 2.54 cm.   1 cm. = 0.3937 in.     1 ft. = 30.48 cm.   1 cm. = 0.0328 ft.     1 m. = 3.2808 ft.   1 ft. = 0.3048 m.     1 m. = 39.37 in.   1 in. = 0.0254 m.     1 m. = 1.0936 yd.   1 yd. = 0.9144 m.     1 rod = 5.029 m.   1 m. = 0.1988 rod     1 km = 1000 m.   1 m. = 0.001 km.     1 km = 0.621 mi.   1 mi. = 1.6103 km. .. ..  SQUARE MEASURES Common Usage Reciprocal Value 1 sq. ft. = 144 sq. in. 1 sq. in = 0.0069 sq. in. 1 sq. yd. = 9 sq. ft. 1 sq. ft. = 0.1111 sq. yd. 1 sq. rod = 30.25 sq. yd. 1 sq. yd. = 0.0331 sq. rods 1 sq. mi. = 640 acres 1 acre = 0.0016 sq. mi. METRIC 1 sq. cm. = 0.1550 sq. in. 1 sq. in. = 6.452 sq. cm. 1 sq. ft. = 0.0929 sq. m. 1 sq. m. = 10.7643 sq. ft. 1 sq. m. = 1.196 sq. yd. 1 sq. yd. = 0.8361 sq. m. 1 hectare = 2.47 acres 1 acre = 0.4049 hectares 1 sq. km. = 0.386 sq. mi. 1 sq. mi. = 2.59 sq. km.  .. ..  AWG to Metric Conversion - American Wire Gauge Conversion Chart AWG mm2   AWG mm2 30 0.05   8 10 28 0.08   6 16 26 0.14   4 25 24 0.25   2 35 22 0.34   1 50 21 0.38   2/00 70 20 0.5   3/00 95 18 0.75   4/00 120 18 (UL) 1   300MCM 150 17 1   350MCM 185 16 1.5   500MCM 240 14 2.5   600MCM 300 12 4   750MCM 400 10 6   1000MCM 500