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   Trammell Hudson (th@social.v.st)'s status on Monday, 28-Apr-2025 04:02:38 JST Trammell Hudson

   Is anyone manufacturing custom slide rules?

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     Trammell Hudson (th@social.v.st)'s status on Monday, 28-Apr-2025 04:02:27 JST Trammell Hudson

     in reply to

     That appears to correctly compute sin(declination)*sin(latitude) now

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     Trammell Hudson (th@social.v.st)'s status on Monday, 28-Apr-2025 04:02:28 JST Trammell Hudson

     in reply to

     Better, although now I'm worried that instead of computing the elevation of the sun, this slide rule will summon a demon instead

     ✧✦Catherine✦✧ repeated this.
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     Trammell Hudson (th@social.v.st)'s status on Monday, 28-Apr-2025 04:02:29 JST Trammell Hudson

     in reply to

     that's not quite right for the declination compensator.

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     Trammell Hudson (th@social.v.st)'s status on Monday, 28-Apr-2025 04:02:31 JST Trammell Hudson

     in reply to

     Paper prototyping reveals that the inner and outer rings of the circular slide rule should have a larger difference in their diameters.

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     Trammell Hudson (th@social.v.st)'s status on Monday, 28-Apr-2025 04:02:32 JST Trammell Hudson

     in reply to

     The slide rule's refraction adjustment is now temperature compensated.

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     Trammell Hudson (th@social.v.st)'s status on Monday, 28-Apr-2025 04:02:34 JST Trammell Hudson

     in reply to

     No, that is not actually useful as a slide rule.

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     Trammell Hudson (th@social.v.st)'s status on Monday, 28-Apr-2025 04:02:35 JST Trammell Hudson

     in reply to

     although this arrangement for the solar declination correction might be better, even though it makes low d changes less accurate.

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     Trammell Hudson (th@social.v.st)'s status on Monday, 28-Apr-2025 04:02:37 JST Trammell Hudson

     in reply to

     Now with solar declination and sine/cosine tables (in addition to height of eye correction, refraction, parallax, and upper/lower limb calendars)