Intro; Preface to the Second Edition; Preface to the First Edition; Contents; 1 Unit of Mass and Standards of Mass; 1.1 Concepts of Mass; 1.1.1 Gravitational Mass; 1.1.2 Inertial Mass; 1.1.3 Equality of Inertial and Gravitational Mass; 1.2 Mass and Weight of a Body; 1.2.1 Conventional Mass; 1.2.2 Variation of the Weight of a Body on Surface of Earth; 1.3 Unit of Mass; 1.3.1 History of the Units of Metre and Kilogram; 1.3.2 Unit of Length; 1.3.3 Kilogram de Archives; 1.4 Metric Convention; 1.4.1 International Kilogram; 1.4.2 National Standard of Kilogram

1.4.3 National Kilogram and Other Standards in India1.4.4 Calibration of Transfer Standards of Mass; 1.5 Hierarchy of Mass Standards; 1.5.1 Nomenclature; 1.5.2 Measurement Chain; 1.5.3 Tracking the Mass Values of Standards; 1.5.4 Period of Verification or Calibration; 1.5.5 Maximum Permissible Errors; 1.6 Traceability of Measurements; 1.6.1 Traceability; 1.6.2 CIPM MRA; References; 2 Two-Pan Equal-Arm Balances; 2.1 Introduction; 2.2 Brief History; 2.3 Other 1-kg Balances; 2.3.1 Equal-Arm Interchangeable Pan Balance UK; 2.3.2 Equal Arm with Double Interchangeable Pan Balance

2.3.3 Substitution Balance NPL-India2.3.4 Electronic Balance with Automation at NPL-India; 2.3.5 Hydrostatic Balance; 2.4 Installation of a Balance; 2.4.1 Proper Environmental Conditions for Balance Room; 2.4.2 Requirements for Location of the Balance; 2.5 Evaluation of Metrological Data for a Balance; 2.5.1 Need for Evaluation; 2.5.2 Visual Examination; 2.5.3 Sensitivity; 2.5.4 Period of Swing or Time Period; 2.5.5 Accuracy of Rider Bar; 2.5.6 Stability/Repeatability; 2.5.7 Repeatability of Weighing; 2.5.8 Equality of Arm Lengths

2.5.9 Calculation of Arm Ratio, Repeatability of Single and Double Weighing2.5.10 Requirement for Arm Ratio and Repeatability of Weighing; 2.5.11 Test for Parallelism of Knife Edges; 2.6 Methods of Weighing; 2.6.1 Direct Weighing; 2.6.2 Transposition Weighing; 2.6.3 Substitution Weighing; 2.7 Double Transposition and Substitution Weighing; 2.7.1 Double Transposition Method; 2.7.2 Double Transposition with Simultaneous Determination of S.R.; 2.7.3 Double Substitution; 2.7.4 Double Substitution Weighing with Simultaneous Determination of S.R.; 2.8 Maintenance of Standard Balances

2.8.1 Category of Balances2.8.2 Reference Balances; 2.8.3 Secondary Standard Balances; 2.8.4 Working Standard Balances; References; 3 Single-Pan Mechanical Balances; 3.1 Introduction; 3.2 Description of a Single-Pan Balance; 3.3 Evaluation of Single-Pan Balance; 3.3.1 Verification Interval; 3.3.2 General Examination; 3.3.3 Sensitivity of the Sprit Level of the Balance; 3.3.4 Hardness of Knife Edges and Bearing Planes; 3.3.5 Sensitivity Setting; 3.3.6 Tests; 3.3.7 Test for Smallest Built-in Weight and Calibration of Illuminated Scale