[PSUBS-MAILIST] measuring an angle issue

[David Colombo via Personal_Submersibles]

Hi Hank, Are you getting your dome before me? First its the Pisces VI, now
your sub, no wonder I waiting till September to get my 30" domes. Hey do
you still need the OTS rig for your boat? Mine is available, Just need to
order a cable. Let me know.
Best Regards,
David Colombo

804 College Ave
Santa Rosa, CA. 95404
(707) 536-1424
www.SeaQuestor.com



On Wed, Jun 26, 2019 at 10:49 AM hank pronk via Personal_Submersibles <
personal_submersibles at psubs.org> wrote:

> E3000 is going from 6 inch conical to 12 in dome
> Hank
>
> On Wednesday, June 26, 2019, 11:43:35 AM MDT, via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
>
> Which boat is this mod on, Gamma or E3000?
>
> Sent from my iPad
>
> On Jun 26, 2019, at 12:22 PM, hank pronk via Personal_Submersibles <
> personal_submersibles at psubs.org> wrote:
>
> Cliff,
> Thanks' probably the best idea.
> Hank
>
> On Wednesday, June 26, 2019, 10:47:09 AM MDT, Cliff Redus via
> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>
> If it were me I would just calculate based on trig.  Before you bore out
> to 12" measure the depth difference between the inside and out side edges
> of the seat and call this a.  Measure the inside and outside diameters
> before boring and designate b as the difference in diameters /2.  Angle
> would be arctan (a/b).
>
> Cliff
>
> On Wednesday, June 26, 2019, 10:57:18 AM CDT, hank pronk via
> Personal_Submersibles <personal_submersibles at psubs.org> wrote:
>
>
> Hi All,  I am planing to remove my original conical port and instal a dome
> on the original conical seat and bore the centre out of the original seat
> to get 12 inches of open view.  Will Cohen is making the dome for me.  My
> problem is, I have to measure the seat angle to within 1\4 of 1 degree.
> How can I measure this angle without buying an expensive digital
> protractor?  I thought about just measuring the distances of the angles and
> just do the math, but it is pretty tricky to measure.
> Hank
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