This lamp is used primarily in microscope illuminators by Bausch & Lomb and others. It is an incandescent lamp with a double contact base with a round flange that has three holes for mounting the lamp. The "X" in the part number indicates the contacts are silver-soldered (rather than lead) for longer lamp life. This lamp is sold under Bausch & Lomb part numbers 31-31-75, 31-31-76, 31-01-05, 31-31-42 and others.
Click to order this lamp now!