Antique 24” Long Stanley Cast Iron Level. Cast in the metal on both sides are  "Stanley" on left, and "No.36-24IN." on right - see photos.

Middle Bubble cover has "Stanley Logo Made in USA" engraved on it

All 3 bubbles work. They also have metal rotating tubes to protect the glass bubbles.  Flange is painted Black

24" x 2 1/4" x 7/8"