The Web edition of the nuclear bomb effects computer, however handy when you're online, isn't much use when operating under field conditions, in a post-Armageddon environment, or for settling thermonuclear bar bets. Fortunately, with a little time, patience, and access to a suitable printer and office supplies, you can assemble your own pocket slide rule computer, just like the original—no batteries or Internet connection required!

You'll need to be able to print graphics (ideally in colour) from images in PNG (Portable Network Graphics) format with a specified and consistent scale. The rotating discs of the bomb computer must be printed on clear plastic with white areas of the image left clear. Most printers can print transparencies intended for overhead projectors which are suitable for this purpose.