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What is That Little Hole At The Bottom of a Padlock For?

 Doorknobs

Brass is known to be anti-bacterial so it’s a popular metal for doorknobs, stair railings, padlocks, or other things people touch regularly.

Gas Indicator

It’s common for people to forget what side of their car the gas tank is on. Luckily, car manufacturers have accounted for that, adding an indicator as a reminder. Typically, the indicator is triangular, found near your gas gauge, and points to the correct side.

A Logo Has 2 Roles

The Heinz 57 label is on numerous sauces ranging from ketchup to steak sauce, but it’s not only a decorative way to highlight the logo. Interestingly, it also serves as a reference point for knowing where to tap the bottle, ensuring the sauce flows easily.

Padlocks and the other things listed above are only a few examples of the many wonderful things invented and designed to make life easier and more convenient.

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