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Post by rob57chev on Feb 20, 2024 13:03:04 GMT -8
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Post by nikeajax on Feb 20, 2024 15:01:54 GMT -8
Hope this helps:  Someone will be sure to answer your question. JB |
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Post by vance on Feb 20, 2024 15:54:29 GMT -8
Hello, and welcome to the forum. If you wouldn't mind, please go to the welcome center and introduce yourself!
I'm sure there will be plenty of help for your questions!
Go to the tech help section for help with posting photos. You are already using imgur, so it'll be easy!
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Post by vance on Feb 20, 2024 16:08:16 GMT -8
OFF TOPIC WARNING!!
If your handle, rob57chev, means what seems to be obvious, I was a '55 Chev fan and owner of several hardtops and 2 doors.
My favorite was a flat black HT with a balanced 283 punched out to 292, 350 hydraulic cam, Muncie 4 speed, and a positraction rear end.
The others were variations, but that one was IT.
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Post by SeaRat on Feb 20, 2024 23:30:12 GMT -8
I have never seen this type of compass, and from the look of it, it is not meant to be used underwater. It appears to be a compass for topside use in the cabin of a boat. If used underwater, it would invert due to the placement of the ring on the top. If upside down, I think the compass dial would move on the middle post, and become disfunctional when the dial impacted the side of the sphere. I don’t know that this was ever available in a U.S. Divers Company catalog either, as I haven’t seen it. I have a hunch that this is one of those give aways that U.S. Divers Company used to advertise their company.
John
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cg43
Senior Diver
Posts: 90
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Post by cg43 on Feb 21, 2024 3:21:19 GMT -8
Hello You can find this compass sphäre with wristband in La Spirotechnique catalogue 1967 . It is the " Boussole VZ 142.200 Even with very littel french langue it's easy to read "fonctionne dans toutes les positions " . Try it , it will work in any position . de.spiro-vintage.com/documents-spirotechniqueGreetings Rainer |
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Post by spirou on Feb 21, 2024 8:13:21 GMT -8
I thinkt, it is a sphery spiro rebranded for us divers But not complete Spheri was a la spirotechnique 1958 patented inventor Serge Vez an ingénieur who works for la spirotechnique. That what I found. Respectfully Fred  Screenshot_2024-02-21-17-09-54-828~2 by Patrick Michel, sur Flickr |
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Post by spirou on Feb 21, 2024 8:18:45 GMT -8
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Post by spirou on Feb 21, 2024 8:23:57 GMT -8
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Post by antique diver on Feb 21, 2024 8:41:03 GMT -8
I have never seen this type of compass, and from the look of it, it is not meant to be used underwater. It appears to be a compass for topside use in the cabin of a boat. If used underwater, it would invert due to the placement of the ring on the top. If upside down, I think the compass dial would move on the middle post, and become disfunctional when the dial impacted the side of the sphere. I don’t know that this was ever available in a U.S. Divers Company catalog either, as I haven’t seen it. I have a hunch that this is one of those give aways that U.S. Divers Company used to advertise their company. John This was available from USD in 1970 when we first opened the shop, and probably before and after that time as well. I just remember that particular year, and I still have mine. The sphere is a bit discolored, but it still works perfectly. The beauty of this diving compass is that there is no level or "up" position. It works in any absolutely any position! Best kept in a pocket when not actually in use to keep it from entanglement as it floats up.   |
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Post by nikeajax on Feb 21, 2024 9:42:22 GMT -8
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Post by SeaRat on Feb 21, 2024 10:13:09 GMT -8
I stand corrected. Thank you! I was looking at the photo, and the post which looked to be fixed in the photo. What you have uncovered is a very interesting concept with a compass.
John
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Post by rob57chev on Feb 21, 2024 17:27:36 GMT -8
Bingo!
1970 sounds about right.
What I was told by the guy I bought it from:
It belonged to his father, a professor that used it on many dives to study lobster off the coast of Newfoundland. It is filled with mineral oil, attached to buoyancy vest near divers face, where easily read in any orientation.
The spindle has a weighted end and a pointy end that points UP, indicating the water surface.
Found that kinda funny as when I was trained to dive, UP was simply where the bubbles went, no fancy device required;)
Sphere appears to be two halves joined together when manufactured making me wonder how deep one could go before it failed?!?
Thank You for your assistance, greatly appreciated!
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Post by rob57chev on Mar 9, 2024 6:23:26 GMT -8
Finding information rather scarce on this item, I wonder what one could say what kind of $ figure it’s worth?
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