William983
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123_1.jpeg
What’s this
- Thread starter William983
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The friendliest place on the web for anyone who enjoys boating.
If you have answers, please help by responding to the unanswered posts.
If you have answers, please help by responding to the unanswered posts.
Northern Spy
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Looks like a taffrail log
Northern Spy
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Well. Part of one.
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William983
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Northern Spy
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Not a knotmeter or log.
Probably just a simple 6 minute (1/10th of an hour) timer for doing dead reckoning chart work when making lots of course changes.
Probably just a simple 6 minute (1/10th of an hour) timer for doing dead reckoning chart work when making lots of course changes.
psneeld
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Calculagraph timer...
https://www.ebay.com/itm/ANTIQUE-K-...-STEAM-PUNK-PHONE-BILLIARD-HALL-/264588213603
https://www.ebay.com/itm/ANTIQUE-K-...-STEAM-PUNK-PHONE-BILLIARD-HALL-/264588213603
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psneeld
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Best described here...have no idea what they were individually used for...just accurate time intervals like NS was pointing out...
Heck, may not even be boat related....
https://en.wikipedia.org/wiki/Calculagraph
Heck, may not even be boat related....
https://en.wikipedia.org/wiki/Calculagraph
Last edited:
ScottC
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I just read further down on the link you provided an saw the interesting entry:
"Antique K.C. Company Germany Calculagraph Timer Used For Long Distance Calls Or In Billiard Halls. Overall good condition for its age, does show wear, see pics. It’s currently not working."
Alaskan Sea-Duction
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So what does it do or used for?
psneeld
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Alaskan Sea-Duction
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WOW Thanks. I thought it had something strictly to do with navigation. I guess you could use it for navigation by plotting run times between two points?
Northern Spy
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It has distinct red lines at 3 and 6.
Assuming these are minutes, it would correlate with the 3 minute and 6 minute rules for reckoning.
In 3 minutes: 100 times speed in knots equals yards travelled.
In 6 minutes: speed in knots divided by ten equals nautical miles travelled.
Assuming these are minutes, it would correlate with the 3 minute and 6 minute rules for reckoning.
In 3 minutes: 100 times speed in knots equals yards travelled.
In 6 minutes: speed in knots divided by ten equals nautical miles travelled.
oscar
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Maximum time allowed from requesting coffee on the bridge to it actually arriving.
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William983
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I’m going with phone timer
