File:Hale demonstrates rifle grenade.png

Summary
Frederick Marten Hale demonstrates his new rifle grenade at the Cotton Powder Company's Faversham works in 1908. Pictured with military and naval attachés of foreign governments.

Originally published in Hale's "Great War" Souvenir of 1921: https://www.iwm.org.uk/collections/item/object/1500081512