What does HO, O, etc stand for

Slot Car Scales

More commonly called HO This size of car replaced the original 187 size HO cars, but the plastic track lane spacing remained the original size so the cars fit

what is slot machine real racing in HO scale, slotcar race set, , from 1970 16- 9 inch radius curved tracks, 2- 6 inch radius curved tracks, 3- 9 inch

what is the best way to measure service level for timeslot delivery_ The current HO slot cars are 1:64 scale which is about the size of a Hot Wheels die cast car The premier HO slot car brand is AFX, which