Ventometer large bore anemometer (W.Gregory &Co) Edged Weapons A brass badge featuring a

A brass badge featuring a 'W' design topped with an Imperial crown

The crown reflects loyalty to the monarchy

Marked with "Patent No

The badge is made of bi-metal construction

an infantry regiment of the British Army

Ventometer large bore anemometer (W.Gregory &Co) Edged Weapons A brass badge featuring aThis Ventometer, engraved with the maker's mark "W. Gregory & Co, London," is a precision tool designed for measuring windage or airflow in large bore applications. The instrument features a fine scale and adjustable threading mechanism for precise readings. Its compact and robust design suggests military and field use in ballistic or environmental contexts. The tool remains in good condition, with visible engravings and functional components. Maker's