What is this thing?

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mykl

Found in the floor of my basement, about 10 inches down. House was built in 1954. (lemmy.ca)

submitted 1 year ago by [email protected] to c/whatisthisthing

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No idea what this is or what the letters might be.

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[–] [email protected] -2 points 1 year ago (1 children)

No harm in spinning the bolts out I wouldn't think. If it's sewer maybe it's covering a conventional looking plug cap.

[–] Son_of_dad 18 points 1 year ago (1 children)

If it's pressurized there could be harm

[–] greyhaven7 2 points 1 year ago

Especially if it is suage