THIS MEASURES APROX 11" LONG, THE BELL OF THE HORN IS APROX 5" DIAMETER, ANY QUESTIONS PLEASE CONTACT ME.
NOT MUCH TO GO WRONG WITH THESE, THEY ARE JUST 3 PARTS THE BELL/BASE, A THIN STAINLESS DIAPHRAGM WITH A SCREW ON CAP THAT TUNES THE SOUND BY HOW MUCH YOU TIGHTEN/LOOSEN THE LARGE END CAP.
PLEASE CHECK MY OTHER LISTINGS FOR ADDITIONAL VINTAGE, AS WELL AS NEW BOAT HARDWARE.