APPENDIX A CONVERSION TABLES

TM-55-2350-224-14 Locomotive Diesel-Electric Manual
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TM 55-2350-224-14 APPENDIX A CONVERSION TABLES A-1. Common Metric Abbreviations m = meter dm = decimeter cm = centimeter mm = millimeter A-2. Linear Measure 1 mi = 1609.35 m 1 yd= 0.9144 m 1 ft = 0.3048 m 1 in. = 0.0254 m 1 m = 10 dm = 100 cm = 1000 mm A-3. Surface Measure 1 sq yd = 0.8361 sq m 1 sq ft = 0.0929 sq m 1 sq in. = 0.00065 sq m A-4. Cubic Measure 1 cu yd= 0.76455 cu m 1 cu ft= 0.02831 cu m 1 cu in. = 0.000016 cu m A-5. Weight 1 Ton = 1 STON = 907.185 kg = 2,000 lb 1 LTON = 2,240 lb = 1.0605t = 1016.05 kg 1 kg = 2.2046 lb 1 lb = 0.45359 kg kg = kilogram km = kilometer t = metric ton 1 km = 0.6214 mi 1 m = 1.0936 yd 1 m = 3.2808 ft 1 m = 39.3700 in. 1 s q m = 1.196 sq yd 1 sq m = 10.764 sq ft 1 sq m = 1,550 sq in. 1 cu m = 1.31 cu yd 1 cu m = 35.30 cu ft 1 cu m = 61,023 cu in. 1 t = 2,204.62 lb 1 t = 1000 kg = 1 Tonne A-6. The following simplified conversion factors are accurate to within 2 percent for quick computations: a. Inches to centimeters—Multiply in. by 10 and divide by 4. b. Yards to meters–Multiply yd by 9 and divide by 10. c. Miles to kilometers—Multiply mi by 8 and divide by 5. d. Pounds to kilograms-Multiply lb by 5 and divide by 11. A-7. The following conversions are provided for guidance when procuring lumber, wire rope, or wire in areas that use the metric system. Lumber sizes are rounded off to the nearest 1/2 cm. a. Lumber. 2-in x 4-in x desired length = 5-cm x 10-cm x desired length 1-in x 6-in x desired length = 2.5-cm x 15-cm x desired length 6-in x 8-in x desired length = 15-cm x 20-cm x desired length 1-in x 12-in x desired length = 2.5-cm x 30-cm x desired length (length normally expressed in ft or m) b. Wire Rope. Round off to next higher whole mm of available wire rope sizes. 3/8-in. dia = 9.5-mm dia 1/2-in. dia = 12.7-mm dia 5/8-in. dia = 15.8-mm dia 3/4-in. dia = 19.0-mm dia 7/8-in. dia = 22.2-mm dia 1-in. dia = 25.4-mm dia 1 1/4-in. dia = 31.7-mm dia 1 1/2-in. dia = 38.1-mm dia c. Wire. No. 8 gauge annealed (11/64-in. dia) = 4.37-mm dia. Round off to the next higher whole mm of available wire rope sizes. A -1

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