Bull's eye spirit level for 30mm tripod

This adapter allows mounting a bull's eye spirit level to a tripod. The adapter is designed to fit on top of the typical 30mm "DIN" cone commonly used by firefighters, emergency responders or stage equipment.

The adapter was designed to fit the following spirit level: https://www.ebay.de/itm/265966322440. Unfortunately the article is out of stock so I might design another adapter for a level which is in stock.