Surface mountable guage cover Designer (Person) Unknown Manufacturer Unknown Date 1910 - 1940 (circa)
Bayonet fitting light adaptor Designer (Person) Unknown Manufacturer Unknown Date 1920 - 1959 (circa)
Switch component Designer (Organisation) Ward and Goldstone Manufacturer Ward and Goldstone Date 1920 - 1960 (circa)
knife sharpener Designer (Person) Unknown Manufacturer Sterling Abrasive Company Date 1920 - 1959 (circa)