Pair of Binoculars / Galilean Field Glasses - Bruce of Ballater
Hama Optec 10 x 50 Porro Prism Binoculars with Travel Case and Carrying Strap for Sports, Outdoors, Birdwatching, Hiking etc., 00002804: Amazon.co.uk: Electronics & Photo
Binoculars - New World Encyclopedia
Aluminum Galilean Binoculars
Opera glasses - Wikipedia
Galilean binoculars, British Army Mark V type | Science Museum Group Collection