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Joined: Jan 2001
Posts: 13,858
Carpal Tunnel
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Carpal Tunnel
Joined: Jan 2001
Posts: 13,858 |
Dear Faldage: This must be one of your dyslexic days. Here is rather good URL about true north vs magnetic north: http://makeashorterlink.com/?Q23F428B2
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Joined: Mar 2000
Posts: 6,511
Carpal Tunnel
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Carpal Tunnel
Joined: Mar 2000
Posts: 6,511 |
Sweeney agonistes and tsuwm (aka ron obvious) obviousizes.
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Joined: Aug 2000
Posts: 2,204
Pooh-Bah
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Pooh-Bah
Joined: Aug 2000
Posts: 2,204 |
what's her take on alidade?
C'mon dxb - she ain't that old! When did you last hear of an alidade being used (unless the name has been nicked to apply to the thingy you squint through on modern, electronic devices!)
They were certainly in use in the C19, and probably well in C20, but I think they were out of favour by the 1950s, at latest.
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Joined: Dec 2000
Posts: 13,803
Carpal Tunnel
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Carpal Tunnel
Joined: Dec 2000
Posts: 13,803 |
out of favour by the 1950s
I used one in the early '60s.
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Joined: Aug 2000
Posts: 2,204
Pooh-Bah
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Pooh-Bah
Joined: Aug 2000
Posts: 2,204 |
Ah! - but what did you use it for ???
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Joined: Jan 2001
Posts: 13,858
Carpal Tunnel
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Carpal Tunnel
Joined: Jan 2001
Posts: 13,858 |
Dear RC: Faldaage used the alidade to learn the direction to Adelaide.
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Joined: Aug 2000
Posts: 2,204
Pooh-Bah
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Pooh-Bah
Joined: Aug 2000
Posts: 2,204 |
Of course, Bill - how silly of me!
(Sure he wasn't looking for Sweet Adeline?)
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Joined: Apr 2000
Posts: 10,542
Carpal Tunnel
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Carpal Tunnel
Joined: Apr 2000
Posts: 10,542 |
>tsuwm obviousizes.
yes, and it turns out to have been a futile attempt to elicit a response, wherein I could reply, "they were the founding sisters of the agonic advisory." well, nearly futile, as there is your response, and you're not exactly birdseed, ASp.
-ron obvious
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Joined: Mar 2002
Posts: 1,692
Pooh-Bah
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OP
Pooh-Bah
Joined: Mar 2002
Posts: 1,692 |
When did you last hear of an alidade being used (unless the name has been nicked to apply to the thingy you squint through on modern, electronic devices!)
You're quite right Rhuby, I don't think it is in use now, but like Faldage I certainly used one in the '60s and according to this 'ere dictionary "In USA the term is also applied to the telescope and its attachments on a theodolite...". So there we are then. Mind you, I did say the dictionary dated from 1958. Some of the stuff in it is downright quaint.
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Joined: Dec 2000
Posts: 2,661
Carpal Tunnel
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Carpal Tunnel
Joined: Dec 2000
Posts: 2,661 |
... downright quaint.
Clearly, the most arcked level of quaint.
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