signal mirror:
Mance Heliograph 1889
signal mirror:
British Heliographs in 1882 - Citadel of Cairo (Crop)
signal mirror:
5" Heliograph Identification Guide: India vs. Mance
signal mirror:
Indian Heliograph vs. Mance Mark V Heliograph 0700
signal mirror:
Indian vs Mance Heliograph 0600
signal mirror:
Indian vs. Mance Heliograph 0400
signal mirror:
Indian vs. Mance Heliograph 1200
signal mirror:
Mance Mark V Heliograph, Simplex Configuration
signal mirror:
Mance Mark I Heliograph 1888
signal mirror:
Mance Mark 1 Heliograph Diagram 1888
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1940 November: Australian Heliograph in Egypt
signal mirror:
Mance Mark II Heliograph 1915/1916
signal mirror:
Mance Mark III Heliograph 1915/1916
signal mirror:
British Heliographs in 1882 at the Citadel of Cairo
signal mirror:
Mance Mark V Heliograph
signal mirror:
Visual signalling, this being possible as we advance
signal mirror:
Heliograph Closeup
signal mirror:
Indian vs Mance Mk5 Heliograph side view
signal mirror:
Heliograph Prototype Kurrachee
signal mirror:
Signaller 2nd Batt Middx Regt with heliograph
signal mirror:
WWI Signalling Instruments with Heliograph
signal mirror:
"At the Heliograph Station"
signal mirror:
The Heliograph Station at Bloemfontein
signal mirror:
A Signal Group On Board H.M.S. Mars - with heliograph
signal mirror:
1896 British South Africa Signalmen with Heliographs
signal mirror:
1899 HMS Warspite Signallers with heliographs
signal mirror:
1896 British Sailor with Heliograph
signal mirror:
Signaller Shore Party from H.M.S. Centurion with Mk. III Heliograph - ca. 1920?
signal mirror:
5" Mance Mark III British Navy Heliograph
signal mirror:
Army Signallers with heliograph, August 1918
