Printable sector: www.thingivers... Printable dividers (the other thing): www.thingivers... My longer video about the sector: • The Sector: the calcul...
I like how simple it is. I wonder what the advantage for this would be over a slide rule, though! Is this one of those tools that makes more sense in the context of a desk drafting board where you need to scale a lot of dimensions by one ratio? Except a slide rule is often the choice there. Maybe it’s just less expensive. Maybe I should watch the full video. 😅
(Now I understand better after seeing the full video) I’d like to see how one would use one of these with navigation charts. Before the 1800s, when angles were more critical for navigation from known coastal points, like a portolan chart! Anyway I can see how the angular measurement plus the basic trigonometric functions and scale divider, in combination with a compass, would be more practical onboard a ship.
I’m to dumb for this… I was fallowing until the breakdown of how it works
Thales's theorem
He pointed at 4.8 after measuring the two triangles. You keep in mind there is a factor of 10. So, it's pointing at 48.
I like how simple it is. I wonder what the advantage for this would be over a slide rule, though! Is this one of those tools that makes more sense in the context of a desk drafting board where you need to scale a lot of dimensions by one ratio? Except a slide rule is often the choice there. Maybe it’s just less expensive.
Maybe I should watch the full video. 😅
(Now I understand better after seeing the full video)
I’d like to see how one would use one of these with navigation charts. Before the 1800s, when angles were more critical for navigation from known coastal points, like a portolan chart! Anyway I can see how the angular measurement plus the basic trigonometric functions and scale divider, in combination with a compass, would be more practical onboard a ship.
The slide rule wasn't invented until the back half of the 1600's.
@@totally_not_a_bot Right, but they’re clearly concurrent through the end of the nineteenth century! So it had some advantages I wanted to understand.
Bro said
or, use your brain
You're constantly using your brain. What do you mean
@@Haezard you can very easily do the multiplication in your head