Ventometer large bore anemometer (W.Gregory &Co) Edged Weapons Marked with "Patent No

Marked with "Patent No

and topped by a crown to signify loyalty to the monarchy

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

particularly the camo pattern used during the South African Border War

These badges were issued to civilians engaged in essential war work during World War I to exempt them from military enlistment scrutiny

Ventometer large bore anemometer (W.Gregory &Co) Edged Weapons Marked with "Patent NoThis 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