Spears wheel

[Linton]

There was an article in Underea warfare magazine about a device called a spears wheel .It is used to calculate periscope look interval.Does anybody have one for me to borrow so that I can make my own?

[Linton]

Come on somebody must have one.You will all want one when you see it!

[rogerbo]

google is your friend ;) but here is the link
http://www.chinfo.navy.mil/navpalib/cno/n87/usw/issue_15/ekelund.html

[Linton]

Rogebo thankyou for the link but that is where I discovered it in the first place.Unfortunately the photograph is not legible when expanded otherwise I would make my own.

[TLAM Strike]

This might be of some intrest:

http://www.subsim.com/phpBB/viewtopic.php?t=52075

[Linton]

Tlam,thanks for that but what i am talking about is a small plastic wheel with a slot in.Apparently you select the platform to look at then dial it up and it gives you a look interval.Have a look at it on the link from rogerbo-its towards the bottom!