Subject: Safety Lamp. Edison-Davis electric miners safety lamp. Makers John Davis & Son (Derby) Ltd. All Saints Works, Derby 792. This nickel-iron battery safety lamp, together with WASC 467, was used on the routine inspection of the factory process buildings.
Description: Safety Lamp. Edison-Davis electric miners safety lamp. Makers John Davis & Son (Derby) Ltd. All Saints Works, Derby 792. This nickel-iron battery safety lamp, together with WASC 467, was used on the routine inspection of the factory process buildings.
