CPC Subgroup
G09B 25/06 for surveying; for geography, e.g. relief models (globes G09B27/00; maps G09B29/00)
Full Title
Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes (model vehicles, tracks therefor, models in the nature of toys A63H) > for surveying; for geography, e.g. relief models (globes G09B27/00; maps G09B29/00)