What are the two dials in compass and possibly a bug

BigWalleye · 09-25-14, 07:17 PM

[QUOTE=Leitender;2246346] This design is "american-like", whereas the fixed bearing disk on german compasses is located on an outer ring.
(...)
The inner ring isn´t wrong, it´s a kind of "american" design.QUOTE]

Leitender, could you please provide the source for those statements, in particular that the design illustrated is an "American" version? It doesn't agree with the information provided in NavShips 324 0149, The Arma Gyrocompass, Mark 7 Mod 4, dated August 1944 (available online here: http://www.hnsa.org/doc/gyromk7/). This is the official US Navy maintenance manual for the gyrocompass produced by the Arma Corporation of Brooklyn, NY, USA under a US Navy contract, for use in US submarines. The diagram on Page 28 clearly illustrates a dial face with a fixed external ring and a rotating inner compass card, the way nautical compass faces in ships of all nations have been laid out for a couple of hundred years. See, for instance, the photo of the compass binnacle aboard USS Constitution (commissioned 1797) https://www.google.com/search?q=uss+...pNTiqLMRMY0%3D or that of HMS Victory (commissioned 1778) https://www.google.com/search?q=hms+...rX9koa2WcCo%3D.

I'd really appreciate knowing the basis of your statement.

09-25-14, 07:17 PM	#8
BigWalleye Sea Lord Join Date: Jul 2012 Location: On the Eye-lond, mon! Posts: 1,987 Downloads: 465 Uploads: 0	[QUOTE=Leitender;2246346] This design is "american-like", whereas the fixed bearing disk on german compasses is located on an outer ring. (...) The inner ring isn´t wrong, it´s a kind of "american" design.QUOTE] Leitender, could you please provide the source for those statements, in particular that the design illustrated is an "American" version? It doesn't agree with the information provided in NavShips 324 0149, The Arma Gyrocompass, Mark 7 Mod 4, dated August 1944 (available online here: http://www.hnsa.org/doc/gyromk7/). This is the official US Navy maintenance manual for the gyrocompass produced by the Arma Corporation of Brooklyn, NY, USA under a US Navy contract, for use in US submarines. The diagram on Page 28 clearly illustrates a dial face with a fixed external ring and a rotating inner compass card, the way nautical compass faces in ships of all nations have been laid out for a couple of hundred years. See, for instance, the photo of the compass binnacle aboard USS Constitution (commissioned 1797) https://www.google.com/search?q=uss+...pNTiqLMRMY0%3D or that of HMS Victory (commissioned 1778) https://www.google.com/search?q=hms+...rX9koa2WcCo%3D. I'd really appreciate knowing the basis of your statement.