How far is an Object Model from DL.

A splint board is provided with a pair of helmet-engaging support members for immobilizing a helmet worn by an injured person and straps for holding the person against the splint board. Each of the helmet-engaging support members is movably mounted on the splint board for movement toward and away from each other whereby the support members can be moved into clamping engagement with opposite sides of the helmet. Each support member can be releasably locked in the desired position on the splint board.