This project is a simple virtual slide rule. Click and drag each ruler to adjust their relative positions. Use the left and right arrows to position the rulers under the central red cursor line. A and D fine tune the cursor position. Press space to toggle between multiplication mode and division mode. C locks and unlocks the cursor position.
Note that the products and quotients calculated may be off by powers of 10 (e.g. 4.5 instead of 0.45). The slide rule artwork came from here: https://commons.wikimedia.org/wiki/File:Slide_rule_example4.svg More info on slide rules can be found here: https://en.wikipedia.org/wiki/Slide_rule
