Preiser model people figures comes in HO, N, Z, 1:32, 1:25, 1:87, 1:160 and 1:220 scale.
In this photo series I used Preiser model people, photographer figures 1:87 scale.
People figures about 2.1mm and mini cars about 4mm – 6mm.
More detail info about figures is here:
In this series mostly Safari Ltd. people figures I used.
Safari Ltd. Miniature Collectible Figures, Safari People comes in variety sizes; 1.25″ L x 3.75″ H or 0.5″ L x 2.50″ H