Slide Rule Targeting for SHIII/SHIV

[don1reed]

Good job, Bill. It's good to see you youngsters keeping the math traditions alive.

I built that circular sliderule from "Sphere" also. I highly recommend it, especially for those who get confused when obligated to move the slide on a 10" model due to answers appearing off scale--less cursor movement.

One of these days, I'm hoping, one of these computer whiz-kids emulates a Bearing Rate Computer (whiz-wheel), that would really be nice.

Cheers

[Dustyboats]

If anyone would like a FLAT Slide Rule (As apposed to the circular one in the diagrams) I am quite happy to post it to you....free of any charges.Its still in its blue case!
Contact me via PM...first come first served....Dusty

[jmr]

Welp my trek to the local antique shops paid off. I managed to grab a Picket Model 14 US which is in great shape along with a a circular slide rule from a military antique store.

Now I have to figure out how to use them :}

[don1reed]

Great find, jmr.

goto: http://www.sphere.bc.ca/test/build.html

they have tons of DL-able instructions.

[Puster Bill]

Originally Posted by don1reed

Great find, jmr.

goto: http://www.sphere.bc.ca/test/build.html

they have tons of DL-able instructions.

Yep. If you can't find it there, try the International Slide Rule museum at http://www.sliderulemuseum.com/.

They have a bunch of scans of the original manuals.

[Hitman]

I have figured out how the rear side of the 1943 wiz-wheel for submarines whose pics posted Kaptain Krunch long ago (http://www.subsim.com/radioroom/showthread.php?t=106923) does work and I have started to creating it with Paint Shop Pro If I get a decent finish, I will upload it so everyone can print and put in the rear side of their banjo. It is a superb tool and completely thought for the use that is of interest to all of us: Sinking vessels!

Wiz rulers rule

[Puster Bill]

Originally Posted by Hitman

I have figured out how the rear side of the 1943 wiz-wheel for submarines whose pics posted Kaptain Krunch long ago (http://www.subsim.com/radioroom/showthread.php?t=106923) does work and I have started to creating it with Paint Shop Pro If I get a decent finish, I will upload it so everyone can print and put in the rear side of their banjo. It is a superb tool and completely thought for the use that is of interest to all of us: Sinking vessels!

Wiz rulers rule

That would be *MUCH* appreciated. I'm going to make a banjo/is-was soon. I don't have SHIV yet (I started this thread in SHIV because there are more 'eyes' here then in the SHIII forum, but I put a link to this thread in there).

I guess I'll just have to assume that my American cousin, who happens to be a submarine commander in the US Navy, sent me one to use before December 11th, 1941

[froschman]

For a veteran as me, it was very interesting to see how to use a slide rule in this game. I have at least two slide rules from my eary days at a technical university, lying around unused. I will study your method.

For those who want to test it, before trying to buy one, there is a java applet simulating a decent slide rule at:

http://www.taswegian.com/TwoHeaded/U...niVirtual.html

Good hunting!

[Puster Bill]

Originally Posted by froschman

For a veteran as me, it was very interesting to see how to use a slide rule in this game. I have at least two slide rules from my eary days at a technical university, lying around unused. I will study your method.

For those who want to test it, before trying to buy one, there is a java applet simulating a decent slide rule at:

http://www.taswegian.com/TwoHeaded/U...niVirtual.html

Good hunting!

Cool. Here is a site with 7 different virtual slide rules (various Pickett models):

http://www.antiquark.com/sliderule/sim/

They are a decent option to use in the game if you don't have a real slide rule.

Seriously, it would be cool if someone would make a virtual one for use in either the map screen, or especially the TDC screen.

[Hitman]

Seriously, it would be cool if someone would make a virtual one for use in either the map screen, or especially the TDC screen.

Redwine already did ot in SH2 But was unable or had no longer time to do it for SH3 . Anyway, a real one in your hands is sooooooooo cool!!!

That would be *MUCH* appreciated

Don't worry, I will try my best. I'm the first one interested in having it

[sluissa]

either I'm doing something wrong or my slide rule is wrong or something, but near the end when you're calculating speed, no matter how I work it, when I put 1 with 3.5,
2.4 =/= 6.85 it's about 8.43 on mine.

everything else seems to work out pretty well with an error or less than 1(usually less than .1), but on that particular problem, I can't seem to get it to work

[Puster Bill]

Originally Posted by sluissa

either I'm doing something wrong or my slide rule is wrong or something, but near the end when you're calculating speed, no matter how I work it, when I put 1 with 3.5,
2.4 =/= 6.85 it's about 8.43 on mine.

everything else seems to work out pretty well with an error or less than 1(usually less than .1), but on that particular problem, I can't seem to get it to work

I think I know what is going on.

If you are working with the C + D scales, you have to move the slide (which has the C scale on it) so that the right-most index mark (the '1' on the right) on the C scale is over 3.5 on the D scale. Then move the cursor to the 2.4 mark on the D scale, and read the speed (6.85 units per second) on the C scale.

If you are using the A + B scales (which I prefer for this), put the 3.5 on the B scale underneath the middle index mark (the '1') on the A scale. slide the cursor to 2.4 on the B scale, and read the speed on the A scale.

I suspect you put the 3.5 on the B scale under the middle index of the A scale, then slid the cursor to 2.4 on the A scale, which will read 8.4 on the B scale.

[Puster Bill]

OK, I re-made my circular slide rule from the sphere site, and put the 'banjo/is-was' on the back of it. I also highlighted the S scale on the circular rule so that it is instantly recognizeable (it's the yellow band below):




And this is the Attack Course Finder side:



I trimmed it to fit on the backside of the slide rule.

By the way, excuse the crappy pictures. Regular camera is broken, so I have to use the webcam to take them.

An interesting experiment would be to mount them both on a board next to each other. Since I have to tote this thing with my laptop, I don't really have that luxury

[stuntcow]

Thanks for the info. I have gone insearch of one that I had. It used to be my grand fathers' and would be great to be able to use it. Thanks.

[sluissa]

ah, that's exactly what I was doing wrong, thank you, I've got it figured out now... now to use my new found skills on some enemy subs