ar – Capital A and capital R ligature for Aspect Ratio

Pro­vides METAFONT source and a LaTeX pack­age for pro­duc­ing and us­ing the up­per­case A/R lig­a­ture as used by sci­en­tists and en­gi­neers in the field of aero­nau­tics as the sym­bol for “as­pect ra­tio”.