Deck Flange 3" O.D.
Description
A record of casting production for pattern number 1763. Pattern sketch on recto. Inscription on recto reads "(Fits with plug 1764)" "Dr. No. 72-5".
A record of casting production for pattern number 1763. Pattern sketch on recto. Inscription on recto reads "(Fits with plug 1764)" "Dr. No. 72-5".