fv1609 Posted November 14, 2013 Author Share Posted November 14, 2013 Is it travelling very fast (one side is red-shifted) http://en.wikipedia.org/wiki/Redshift Wow Lauren that's clever stuff, beyond me though. It's not that sort of phenomenon. Quote Link to comment Share on other sites More sharing options...
Tony B Posted November 14, 2013 Share Posted November 14, 2013 Boundary marker for safe areas? Quote Link to comment Share on other sites More sharing options...
wally dugan Posted November 14, 2013 Share Posted November 14, 2013 for want of a better discription is this a dial instrument that as you say is viewed one side at a time to give differant readings Quote Link to comment Share on other sites More sharing options...
andym Posted November 14, 2013 Share Posted November 14, 2013 Are the red and blue anything to do with hot and cold? Andy Quote Link to comment Share on other sites More sharing options...
Rangie Posted November 14, 2013 Share Posted November 14, 2013 Assembly area? Alec Quote Link to comment Share on other sites More sharing options...
fv1609 Posted November 14, 2013 Author Share Posted November 14, 2013 Boundary marker for safe areas? Nope its not that Tony Quote Link to comment Share on other sites More sharing options...
fv1609 Posted November 14, 2013 Author Share Posted November 14, 2013 for want of a better discription is this a dial instrument that as you say is viewed one side at a time to give differant readings Nope Wally not used in conjunction readings. Quote Link to comment Share on other sites More sharing options...
fv1609 Posted November 14, 2013 Author Share Posted November 14, 2013 Are the red and blue anything to do with hot and cold? Andy Nope not a temperature thing Andy Quote Link to comment Share on other sites More sharing options...
fv1609 Posted November 14, 2013 Author Share Posted November 14, 2013 Assembly area? Alec Nope Alec not that. Quote Link to comment Share on other sites More sharing options...
Rangie Posted November 14, 2013 Share Posted November 14, 2013 Hmm, alignment/coupling marks? Red to red, blue to blue etc? Alec Quote Link to comment Share on other sites More sharing options...
fv1609 Posted November 14, 2013 Author Share Posted November 14, 2013 Hmm, alignment/coupling marks? Red to red, blue to blue etc? Alec Nope Alec not that. If it helps these particular ones were in use in the 1950s-90s although they may have been based on a wartime system but I don't know. Quote Link to comment Share on other sites More sharing options...
wally dugan Posted November 14, 2013 Share Posted November 14, 2013 blue friendly red enemy Quote Link to comment Share on other sites More sharing options...
fv1609 Posted November 14, 2013 Author Share Posted November 14, 2013 blue friendly red enemy A good one but not that Wally. Quote Link to comment Share on other sites More sharing options...
marvinthemartian Posted November 14, 2013 Share Posted November 14, 2013 NBC warning signs, blue safe, red danger? Simon Quote Link to comment Share on other sites More sharing options...
fv1609 Posted November 14, 2013 Author Share Posted November 14, 2013 NBC warning signs, blue safe, red danger?Simon Nope not that Simon. Quote Link to comment Share on other sites More sharing options...
wally dugan Posted November 14, 2013 Share Posted November 14, 2013 IS it used in direction finding as in artillary Quote Link to comment Share on other sites More sharing options...
fv1609 Posted November 14, 2013 Author Share Posted November 14, 2013 IS it used in direction finding as in artillary Nope not that Wally. Quote Link to comment Share on other sites More sharing options...
Lauren Child Posted November 15, 2013 Share Posted November 15, 2013 Does red and blue represent forward and backward / fore and aft? Quote Link to comment Share on other sites More sharing options...
Lauren Child Posted November 15, 2013 Share Posted November 15, 2013 or does it spin, red/blue used to discern when it's rotating? Maybe wind speed or engine rotation? Quote Link to comment Share on other sites More sharing options...
wally dugan Posted November 15, 2013 Share Posted November 15, 2013 is it a form of telegraph indicator like that on a ship Quote Link to comment Share on other sites More sharing options...
fv1609 Posted November 15, 2013 Author Share Posted November 15, 2013 Does red and blue represent forward and backward / fore and aft? Nope not that Lauren Quote Link to comment Share on other sites More sharing options...
fv1609 Posted November 15, 2013 Author Share Posted November 15, 2013 or does it spin, red/blue used to discern when it's rotating? Maybe wind speed or engine rotation? That's a novel idea but nope Quote Link to comment Share on other sites More sharing options...
fv1609 Posted November 15, 2013 Author Share Posted November 15, 2013 is it a form of telegraph indicator like that on a ship Nope Wally no moving parts, but it is placed somewhere to indicate something depending which way up it is & where it is positioned. Quote Link to comment Share on other sites More sharing options...
andym Posted November 15, 2013 Share Posted November 15, 2013 Some sort of level indicator, perhaps? Andy Quote Link to comment Share on other sites More sharing options...
Redherring Posted November 15, 2013 Share Posted November 15, 2013 If it has two sides then it is an object as opposed to a painted sign. This being the case is it flat? Quote Link to comment Share on other sites More sharing options...
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