From Elginhaugh, Midlothian
This metal key was found at site of the the Roman fort at Elginhaugh in Midlothian. It was used sometime between 79 and 180 AD.
The key is for a tumbler lock. Tumbler locks had a number of holes on the bolt. The slide key had matching projections, and was used to push the tumblers out of the bolt securing the door.
Concern with security is nothing new. The Romans built doors with handles, hooks and levers. Complicated lock and key mechanisms were also fitted to doors and chests, as evidenced by the large number of keys which have been found.
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