APPENDIX A SOME USEFUL MATHEMATICAL FORMULAS

APPENDIX B THE METRIC OR DECIMAL SYSTEM

APPENDIX C METRIC MEASURES OF LENGTH AND VALUES IN INCHES

APPENDIX D METRIC MEASURES OF WEIGHT AND VALUES IN ENGLISH WEIGHT

APPENDIX E TO CHANGE METRIC TO ENGLISH MEASURE AND VICE VERSA

APPENDIX F SIZES OF TWIST DRILLS FOR TAPS OR SCREWS

APPENDIX G SIZES OF TAPS AND DIES

APPENDIX H SIZES OF MACHINE SCREWS AND NUTS

APPENDIX I REDUCING FRICTION

APPENDIX J WEIGHT OF CASTINGS COMPARED WITH WOOD PATTERNS

APPENDIX K GEARS AND GEARINGS

APPENDIX L SOME USEFUL ALLOYS

APPENDIX M SOME HARD SOLDERS

APPENDIX N HIGH SPEED STEEL

APPENDIX O

SOME ELECTRICAL SYMBOLS, TERMS AND FORMULAS

SOME DEFINITIONS

SOME ELECTRICAL UNITS

OHM’S LAW

APPENDIX P NUMBER, DIAMETER, CAPACITY, WEIGHT, AND RESISTANCE OF PURE COPPER WIRE

APPENDIX Q NUMBER OF TURNS OF WIRE THAT CAN BE WOUND IN A GIVEN SPACE

APPENDIX R PRICES OF SINGLE AND DOUBLE SILK AND COTTON COVERED MAGNET WIRE

APPENDIX S A LIST OF SOME CHEMICAL ELEMENTS AND THEIR SYMBOLS

APPENDIX T THE COMMON NAMES OF SOME CHEMICALS

APPENDIX U THE FOUR CHIEF THERMOMETRIC SCALES

SOME WORDS AND TERMS USED IN THIS BOOK