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Originally Posted by Captain Krunch
Everyone, the good folks over at the Historic Naval Ships Association have posted "Submarine Attack Course Finder Mark 1 Model 3 Manual, O.D. 453", so we no longer have to guess how the heck to use the Is-Was! In addition, this manual has some fairly clear images of the back side of the Is-Was, so I might eventually be able to complete what I've already put together - but I probably won't be able to get to it for a while, so anyone else can feel free to step up and create the back side of this thing. |
Sounds like I've 'reinvented' the wheel, so to speak. The backside of the banjo is simply a circular slide rule with a few extras to make it easier to use for targeting (especially compensating for own speed).
What I did was take the banjo, and put it on the back of a circular slide rule that I got from the Sphere Research site (
http://www.sphere.bc.ca/test/build.html). You want body image 1, print it out on cardstock, use a highlighter to highlight the S scale, then laminate it. Print the overlay/cursor image on inkjet transparency, then laminate it also (helps make it more rigid and durable). I pinned them back to back, and it looks like this...
Slide rule side:
'Banjo' side:
I would really be interested in getting that other side, though.