Ekelund range calculator

[Pisces]

Is it the one on page 24 of that pdf? I once attempted to make one with a cad-program. But I overdid it on the smaller scale marks and placed it on the backburner. And later lost the file so i would have to start over. I'm not inclined to do so now though. All those lines were a pain in the stern.

There is was a slideruler made for use with SH4, a replica of what they used back then.

http://www.subsim.com/radioroom/show...=106923&page=3

http://www.subsim.com/radioroom/show...&postcount=108

Found a pdf template of it:

http://www.filefront.com/Printable+I.../fileinfo.html


There was also supposed to be an opposite side with moving disks, to help in solving bearings,target and ownship course and such:

http://rapidshare.com/files/20112558...White.pdf.html