1.
This 18th century fire alarm that you’d need to hit with a hammer to alert the village of a fire:
2.
This 18th century machine that let researchers read up to 8 open books at once:
3.
This 18th century condom:
4.
This 18th century diving suit:
5.
This 1740 wheelchair for Holy Roman Empress Elisabeth Christine of Brunswick-Wolfenbüttel:
6.
This 18th century Scottish mortsafe to stop graverobbers:
7.
This 18th century gaming device that came before the pinball machine:
8.
This mid-1700s well that was glassed over and eventually became part of a home’s kitchen:
9.
This 18th century French chair for reading books:
11.
This 1750s wall latern:
12.
This 18th century mansion’s dog grave:
13.
These 18th century sword-shaped Chinese coins:
14.
This 18th century case of amputation instruments:
15.
This 18th century lock that requires four keys to open:
16.
This 18th century palace hall:
17.
This 1700s graffiti on a cathedral:
18.
This 18th century building in Norland, Norway:
19.
And finally, this 1700s lighthouse Fresnel lens: