Bulb Type click on the bunch of bulbs, below, to view shapes, base and filament types, etc., to aid you in identifying specific lamps.  A new window will open, and you may scroll, and adjust "zoom" to see the detail.  When you have finished viewing, close the window and this page will again appear.  You must have Adobe® Acrobat™ Reader installed to view Bulb Types (in PDF format).