How to Measure Things Without Rules
Some of us still do not wear a tape measure / ruler / caliper with us all the time and are at a loss when we need to measure something. In this instructable, I will help you solve this situation by actually measuring the things you usually do, if not always having weapons joining: credit cards, dollar bills, currencies and cell phones. This way, when you need to measure something (and is not a practical rule) you can use your standardized objects to measure.
Let’s get started!