A generic 1930s ladder-frame truck chassis sized for and designed for hobbyists building dioramas, layout vehicles and kitbash projects. The underframe preserves twin ladder rails, stamped crossmembers, flat mounting pads at the firewall and bed supports, leaf-spring hangers and simplified axle housings so it reads correctly at miniature scale. The chassis is supplied as a single master file; use standard scaling tools to produce alternate sizes but verify mating points and minimum feature thickness after scaling. This donor underframe is ideal for pickups, small delivery vans and workshop recovery trucks in interwar street scenes. For layout use test-fit wheel hubs and check clearance before final assembly. The mesh strengthens small visual features such as spring ends and bolt pads to survive handling and support removal. Source data is a legacy stub and the chassis is intentionally generic and unbranded.