ICSE Class 7 Answered

In order to maintain the national standard, labortories have been set up in different regions or states. The weights used in any part of country are certified. National physical lab calibrates the measurement standards of all regional laboratories. Hence, measurements made in any part of India remains standardised by linking them to national and international standards. Hence, it is neccessary for shopkeepers to use the standard weights for measuring and not doing so is a punishable offence.