About Scotts Nixie Tube Clock: Scott's Nixie Tube Clock is a cool looking clock for your windows desktop that looks like an old-style nixie tube clock. You can also choose to display the clock as a vacuum fluorescent display (vfd). The clock is intended to be a conversation piece and a way to spruce up your otherwise drab windows desktop. The clock uses a transparent background and window frame that makes it blend right into your desktop. Free for non-commercial use. [more]