Portuguese Heliograph Type 938C Right Side Isometric 1
This is an isometric photo of a Portuguese Type 938C Heliograph, serial number 1308, produced at the "Fábrica de Braço de Prata, Lisboa" military factory in Lisbon, Portugal, in 1938 or later.
A heliograph is a device for signaling by flashes of reflected sunlight from mirrors using Morse Code or the like. ( see en.wikipedia.org/wiki/Heliograph).
This is a small heliograph. The manufacturer's plate says: "Fábrica de Braço de Prata, Lisboa", which is the name of a Portuguese military factory in eastern Lisbon, which started operations in 1908, but per this Portuguese military signalling page: historiadastransmissoes.wordpress.com/tag/heliografo/ this type of heliograph was not manufactured (anywhere) until 1930, and was first manufactured at a different location.
This Portuguese web page shows photographs of an Italian heliograph made in an Italian heliograph factory in the 1920s. The factory was purchased by the Portuguese military, and this design seems to have been the inspiration for this Portuguese design:
historiadastransmissoes.wordpress.com/2013/02/05/3525/
This is the first in a set of seven photographs of this example.
I think the "1308" on the base is the serial number, and that the unit displayed here and described as "heliograph type 938 C", manufactured in 1938:
historiadastransmissoes.wordpress.com/tag/heliografo/
on a tripod with case is serial number 1277
(the full photo is here: historiadastransmissoes.files.wordpress.com/2011/11/image... )
There is also a photograph of one of these at the museum: Espaço de Transmissões Militares - Palmela, Portugal, on a tripod (next to a much larger heliograph):
img.groundspeak.com/waymarking/8876052b-cdb9-4359-a1a1-44...
A nice photograph of one with pristine green paint and the leather case is here:
www.fpc.pt/Portals/0/Flipbook/HTML/files/assets/seo/page7...
The full resolution version of my photograph is here:
www.flickr.com/photos/signalmirror/8222358593/sizes/o
For views from other angles, see the set:
Set of photos of Portuguese Heliograph from other angles
Portuguese Heliograph Type 938C Right Side Isometric 1
This is an isometric photo of a Portuguese Type 938C Heliograph, serial number 1308, produced at the "Fábrica de Braço de Prata, Lisboa" military factory in Lisbon, Portugal, in 1938 or later.
A heliograph is a device for signaling by flashes of reflected sunlight from mirrors using Morse Code or the like. ( see en.wikipedia.org/wiki/Heliograph).
This is a small heliograph. The manufacturer's plate says: "Fábrica de Braço de Prata, Lisboa", which is the name of a Portuguese military factory in eastern Lisbon, which started operations in 1908, but per this Portuguese military signalling page: historiadastransmissoes.wordpress.com/tag/heliografo/ this type of heliograph was not manufactured (anywhere) until 1930, and was first manufactured at a different location.
This Portuguese web page shows photographs of an Italian heliograph made in an Italian heliograph factory in the 1920s. The factory was purchased by the Portuguese military, and this design seems to have been the inspiration for this Portuguese design:
historiadastransmissoes.wordpress.com/2013/02/05/3525/
This is the first in a set of seven photographs of this example.
I think the "1308" on the base is the serial number, and that the unit displayed here and described as "heliograph type 938 C", manufactured in 1938:
historiadastransmissoes.wordpress.com/tag/heliografo/
on a tripod with case is serial number 1277
(the full photo is here: historiadastransmissoes.files.wordpress.com/2011/11/image... )
There is also a photograph of one of these at the museum: Espaço de Transmissões Militares - Palmela, Portugal, on a tripod (next to a much larger heliograph):
img.groundspeak.com/waymarking/8876052b-cdb9-4359-a1a1-44...
A nice photograph of one with pristine green paint and the leather case is here:
www.fpc.pt/Portals/0/Flipbook/HTML/files/assets/seo/page7...
The full resolution version of my photograph is here:
www.flickr.com/photos/signalmirror/8222358593/sizes/o
For views from other angles, see the set:
Set of photos of Portuguese Heliograph from other angles