signal mirror: 5" Heliograph Identification Guide: India vs. Mance
signal mirror: Indian Heliograph vs. Mance Mark V Heliograph 0700
signal mirror: India Heliograph (left) vs. Mance Mark V
signal mirror: 2.25 inch diameter India Heliograph
signal mirror: Identification of 2.25 inch India Heliograph
signal mirror: 3" and 5" India Heliographs - 1902 Lahore, India
signal mirror: Indian vs Mance Heliograph 0600
signal mirror: Indian vs. Mance Heliograph 0400
signal mirror: Indian vs. Mance Heliograph 1200
signal mirror: Indian Heliograph Collage
signal mirror: India Heliograph Diagram 1911
signal mirror: Parts list for India Heliograph
signal mirror: India Heliograph and Pith Helmet
signal mirror: Seaforths Signallers wi Heliograph
signal mirror: 1880 Roorkee Heliograph
signal mirror: 1880 Roorkee Helio Sighting Arm
signal mirror: Roorkee 4.5" heliograph
signal mirror: Diagram of Roorkee 3" Heliograph
signal mirror: Indian vs Mance Mk5 Heliograph side view
signal mirror: 12 inch heliograph
signal mirror: 1894 Signallers with Heliographs
signal mirror: Two British Heliographs Mesopotania WWI
signal mirror: 1879-1880 Heliographs and Begbie Heliostats
signal mirror: 1917(?) Indian Army Heliograph Mesopotamia Kara Tepe
signal mirror: Mohmand Expedition of 1908 Visual Signalling Stations MAP
signal mirror: 1917 - Indian Soldier on the Tigris with Heliograph
signal mirror: Royal Horse Artillery Signal Section wi Heliographs
signal mirror: Victorian Royal Horse Artillery Signallers with Heliograph - contrast enhanced
signal mirror: Victorian Royal Horse Artillery Signallers with Heliograph - as scanned
signal mirror: 1918: R.G.A. Signallers in Rangoon with Heliographs