{"version":"1.0","type":"link","title":"Ready reckoner - Newikis","description":"A ready reckoner is a reference book or page that presents commonly used calculations alongside their corresponding results, enabling rapid retrieval of answers. They were extensively employed in retail and by tradespeople prior to the widespread availability of inexpensive electronic calculators,…","provider_name":"Newikis","provider_url":"https://newikis.com","cache_age":86400,"thumbnail_url":"https://upload.wikimedia.org/wikipedia/commons/e/ea/The_Ready-Reckoner.jpg","thumbnail_width":794,"thumbnail_height":714}