How do companies that make measuring tools like rulers make sure the product is accurate? Is there a universally ruler that is used to check? How do they make sure the measurements are exact?
In: Engineering
There are standardised measuring for all measurements – weight, length and volume, and everything is based on those. However, as this [pic](https://www.chicagotribune.com/resizer/CJfjkvsfuJMeF0_WiY3QatN5lk8=/415×233/top/arc-anglerfish-arc2-prod-tronc.s3.amazonaws.com/public/OL6BYXWYXZAZDHZSOBD4HO3JSM.jpg) can attest, its all a load codswallop, and none have any idea what the hell they’re doing.
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