Every measurement that matters - every weight on a market scale, every litre at a fuel pump, every load on a crane - depends on a system that most people never see. Legal metrology is that system: the branch of measurement science that carries the force of law, protecting consumers, enabling fair trade, and underpinning public safety from the shop floor to the courtroom.
Legal Metrology Basics: A Complete Guide for Technicians and Inspectors is the definitive practical reference for anyone working in, studying, or responsible for legally controlled measurement. Written by Almachius Kaiza Pastory, a metrologist with over two decades of field inspection and regulatory management experience at Tanzania's Weights and Measures Agency, this book bridges the gap between international standards and everyday field practice with clarity, authority, and professional depth.
Eight structured chapters move from foundational principles to hands-on verification procedures, equipping readers to work confidently, accurately, and lawfully.
Chapter One establishes the discipline: its purpose, legal framework, and key concepts including verification, calibration, traceability, type approval, and maximum permissible error, all grounded in real-world application. The architecture of BIPM, OIML, AFRIMETS, and national authorities is mapped clearly.
Chapter Two makes the case that safety is a legal and professional prerequisite, not an afterthought. Lock-Out/Tag-Out, PPE, site hazard identification, and the regulatory basis for refusing unsafe work are covered in practical detail.
Chapter Three introduces structured risk assessment: a five-step framework applied across physical, measurement, compliance, instrument, and documentation risk, with a complete Site Risk Assessment Form and worked field scenarios.
Chapters Four and Five deliver step-by-step verification procedures for Non-Automatic Weighing Instruments (NAWIs), from market scales to 500 kg retail systems, and Automatic Weighing Instruments (AWIs), covering software integrity, type approval, and conveyor-integrated systems.
Chapter Six extends legal metrology to lifting equipment including cranes, hoists, and forklifts, where measurement error directly threatens structural safety. Load cell classification, proof load testing, and verification under representative field conditions are covered in full.
Chapter Seven addresses fuel dispensers and industrial flow meters, the instruments at the centre of petroleum trade and custody transfer. OIML R 117 requirements, prover tank and master meter methods, environmental correction, tampering detection, and legally defensible certification are all addressed.
Chapter Eight draws together the systems that give all verification its authority: measurement traceability, laboratory accreditation under ISO/IEC 17025, and the seven core elements of a quality management system, from management responsibility and resource control to corrective action, product surveillance, and change management.
Throughout, the book is anchored in OIML R 76, R 51, R 117, R 60, ISO/IEC 17025, and the GUM, and illustrated with worked examples, compliance case studies, and end-of-chapter assessments with full instructor answer keys.
For trainee technicians, experienced inspectors, training coordinators, and regulatory managers: this book provides the knowledge, procedures, and professional framework to perform legal metrology work with competence, integrity, and full legal authority.
Measurement is the foundation of trust. This book shows you how to earn it.
外文書商品之書封，為出版社提供之樣本。實際出貨商品，以出版社所提供之現有版本為主。部份書籍，因出版社供應狀況特殊，匯率將依實際狀況做調整。
無庫存之商品，在您完成訂單程序之後，將以空運的方式為你下單調貨。為了縮短等待的時間，建議您將外文書與其他商品分開下單，以獲得最快的取貨速度，平均調貨時間為1~2個月。
為了保護您的權益，「三民網路書店」提供會員七日商品鑑賞期(收到商品為起始日)。
若要辦理退貨，請在商品鑑賞期內寄回，且商品必須是全新狀態與完整包裝(商品、附件、發票、隨貨贈品等)否則恕不接受退貨。
