{ "item_title" : "The Theory And Use Of A Physical Balance (1887)", "item_author" : [" James Walker "], "item_description" : "The Theory and Use of a Physical Balance is a book written by James Walker in 1887. It is a comprehensive guide to the principles and practical applications of physical balance, a device used to measure the weight of objects accurately. The book covers the history of physical balance, the different types of balances, their construction, calibration, and maintenance. It also includes detailed explanations of the theory behind the balance, including the principles of mechanics and the laws of equilibrium. The author provides practical examples and exercises to help readers understand the concepts and apply them in real-life situations. This book is an essential resource for students, scientists, and anyone interested in the science of measurement and precision.This scarce antiquarian book is a facsimile reprint of the old original and may contain some imperfections such as library marks and notations. Because we believe this work is culturally important, we have made it available as part of our commitment for protecting, preserving, and promoting the world's literature in affordable, high quality, modern editions, that are true to their original work.", "item_img_path" : "https://covers1.booksamillion.com/covers/bam/1/16/405/544/1164055445_b.jpg", "price_data" : { "retail_price" : "18.95", "online_price" : "18.95", "our_price" : "18.95", "club_price" : "18.95", "savings_pct" : "0", "savings_amt" : "0.00", "club_savings_pct" : "0", "club_savings_amt" : "0.00", "discount_pct" : "10", "store_price" : "" } }

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