This image was acquired from
wikimedia. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
Transit instrument meridian transit made by Carl Bamberg Company Germany National Museum of Nature and Science Tokyo DSC. en Exhibit in the National Museum of Nature and Science Tokyo Japan Photography was permitted in the museum without restriction own Daderot cczero Scientific instruments in the National Museum of Nature