I finally got to see a ruler in use in Mobile Frame Zero and the effect it has on the game at PAX East. Before this point I had always used a tape measure. The reasons behind this are twofold. One, I'm a little bit old-school. Two, the original design of the ruler is awful. Sorry, Vincent and Joshua, it just is. The one Joshua used when running his game is a "whip" of 1x4 Hinge Bricks about nine pieces long. Heh, it's a Nine-Section Whip Chain. :-) The main body of this brick measures 1.25", each hinge adds 0.25". With one unit of movement being roughly 1.5" -- there is overlap where the hinges connect -- this allows mechs to move farther on each turn. At one point, under the old rules, there was an optional rule that allowed a mech multiple activations if they possessed multiple Initiative dice. Under this rule you could attack multiple times but move only once. Now I understand why. Although I wonder what a game would look like with a modification of that rule allowing double movement only if you use a tape measure to measure movement?
I believe I'll be making a Ruler before I play again though. I can't wait to see what effect it has on my gameplay.