The ultimate manhole covers site

A diagonal lid is a rectangular lid consisting of two triangular parts, so that its opening is done by lifting one of the parts.

In the picture you can see what the cover looks like while one of the parts is removed. The lid in its "closed" form can be seen here Click for cover's details
Rua do Arsenal 80, 1200-484 Lisboa, Portugal
Eli Zvuluny 2022

The ultimate manhole covers site

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