I first heard of nomograms on Project Rho's page about calculating spaceship missions: http://www.projectrho.com/public_html/rocket/torchships.php#id--Brachisto

I first heard of nomograms on Project Rho's page about calculating spaceship missions: http://www.projectrho.com/public_html/rocket/torchships.php#id--Brachistochrone_Equations--Delta-V--Nomograms http://www.projectrho.com/public_html/rocket/torchships.php#... In addition to being practical calculators, they're amazing higher-order visualization tools. http://www.projectrho.com/nomogram/ http://www.projectrho.com/nomogram/ has more info on how to create them in the context of tabletop wargames.