WHY SHOULD WE USE THE STANDARD LENGTH OF MEASUREMENT

we should use standard legnth of meausrement because if we measure very imporatnt objects in an in acuurate way then it may lead to problems fro example if any mesurements go wrong and are very inaccurate while preparing a part in a rocket the whole rocket and the money spent on it will become a loss. 

another example to explain why we have to use accurate measurements because, for example in a test if every child taking part measured a certain object with thier own handspans then every child will have a different answer beacause everyones hand legth is different. 

therefore it is very important to use accurate meausrements .