Ventometer large bore anemometer (Patent) Books reflecting Commonwealth wartime production efforts

reflecting Commonwealth wartime production efforts to supply Britain and Allied forces during the height of WWII

The sight attaches to the side of the receiver via a spring-loaded arm and clamp system

suggesting quality manufacture for formal presentation

and surmounted by a globe with intricate details

Brass/bronze UDF title/badge bearing the legend “NATAL & O

Ventometer large bore anemometer (Patent) Books reflecting Commonwealth wartime production effortsA smalll bore ventometer used to measure wind resistance and velocity. Features a graduated scale with clear markings, precision screw adjustment, and an engraved "Patent" marking on the body, indicating an original and innovative design. Made from high quality brass and steel components for durability and precision.