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Old 22-09-2020, 04:40   #1
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Mystery Tool

Does anyone know what this tool is?

(No, not the ruler!)
I know it had a purpose but have completely forgotten what.
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Old 22-09-2020, 04:44   #2
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Re: Mystery Tool

A picture would help!!!!

(I have done the same.)
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Old 22-09-2020, 04:59   #3
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Re: Mystery Tool

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Old 22-09-2020, 19:09   #4
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Re: Mystery Tool

Wow, GordMay, how old is your boat to have fossilized tools like that?
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Old 22-09-2020, 19:51   #5
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Re: Mystery Tool

It's called a protractor. You can attach a thread and a fishing weight and navigate to Hawaii with it.
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Old 22-09-2020, 19:55   #6
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Re: Mystery Tool

Do the teeth match an anchor chain? Maybe some sort of manual (temporary) "winch" where manpower is not adequate?
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Old 22-09-2020, 20:02   #7
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Re: Mystery Tool

Quote:
Originally Posted by Thumbs Up View Post
It's called a protractor. You can attach a thread and a fishing weight and navigate to Hawaii with it.

Maybe take that up with the US Navy? I don't know much about navigation but it looks like a great idea.

Apparently all Skippers (Senior Officers?) in the USN have to know how to navigate using sextants in case the GPS Satellites malfunction.
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Old 22-09-2020, 22:15   #8
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Re: Mystery Tool

Quote:
Originally Posted by coopec43 View Post
Apparently all Skippers (Senior Officers?) in the USN have to know how to navigate using sextants in case the GPS Satellites malfunction.
Many (most?) of the big shipping lines require deck officers to have celestial navigation skills too.
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Old 22-09-2020, 22:38   #9
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Re: Mystery Tool

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Originally Posted by Alan Mighty View Post
Many (most?) of the big shipping lines require deck officers to have celestial navigation skills too.
"I can't speak for the U.S. Navy but in the Merchant Marines we do have to be proficient in celestial navigation to get our unlimited tonnage license. That being said, most officers seldom ever use the practice in real life and most become complacent. Some captains may have officers use celestial navigation periodically or even daily but the GPS is still their main navigational tool for determining positions. My guess is that Navy practices are the same"
(David Irving Decesare
, Third Mate unlimited tonnage)
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Old 23-09-2020, 21:31   #10
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Re: Mystery Tool

Airline Pilot Forums

The sextant is "in" again
"In the event (of) a national emergency, we would probably have to shut the GPS down because it can be used by potential enemies," says a retired captain who started a foundation to keep in contact with experts.

Then "the old celestial navigators all passed away," he says. New graduates won't exactly be experts: They'll receive three hours of training on celestial navigation theory during an advanced navigation course.

"We're just baby-stepping it," says an instructor, "but we really do have the capabilities to expand." Some ROTC detachments will soon begin pilot programs, the Gazette adds.

Though even a skilled celestial navigator can only calculate a location to within 1.5 miles, "if you're out at sea, you should be able to navigate without GPS," Rogers says.
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Old 23-09-2020, 22:26   #11
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Re: Mystery Tool

The original poster hasn't returned with a photo, so we know not what he has, but I do like Gord's steel artwork.
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Old 24-09-2020, 03:28   #12
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Re: Mystery Tool

it is for detecting "Thin Air",the tool becomes visible when thick air is present.........normally it has a bit of string attached to it which appears to be missing so you can find it when you need it....
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Old 25-09-2020, 02:31   #13
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Re: Mystery Tool

Quote:
Originally Posted by adjo View Post
Does anyone know what this tool is?

(No, not the ruler!)
I know it had a purpose but have completely forgotten what.
You guys that open up a thread and never bother to respond to a query are a bit of a worry. (I'd like to see your other (13) posts).
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Old 25-09-2020, 03:46   #14
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Re: Mystery Tool

OP posted a link to a OneDrive account, but the file is either missing or he didn't give permission to view it - so it's not showing up.
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Old 25-09-2020, 04:20   #15
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Re: Mystery Tool

Can anyone tell me what these mstery tools are for?

https://www.letoolman.com/mystery-tool-page.html




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