18/ Just noting that on a 1' dia circle, the width of the chisel incised layout ticks is very noticeable. 1/2 ° or more!
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Replying to @MorlockP
19/ I ran into exactly this when tramming in Bridgeport's head: head has angle markings. Setting it at 0° is just the start of the process
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Replying to @MorlockP
20/ So how does a surveyor's transit do its magic? The platen can rotate and there is a second indicator. Hand wavingly, you lock scope
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Replying to @MorlockP
21/ to platen, rotate both, lock platen to base, unlock scope, pivot scope back to target, repeat. You're basically measuring same angle >
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Replying to @MorlockP
22/ 10 times, and thus your 21° angle is measured as 210° degrees. You divide by 10...and your ERROR is divided by 10 as well.
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Replying to @MorlockP
23/ So that's the magic: a process that lets the signal stay at full strength by adding it in 10 times, but gaussian error self cancels.
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Replying to @MorlockP
24/ ...and that's the kind of process I'm wondering about re threads: is there a way to (a) deterministically create it f() = g() = h()
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Replying to @MorlockP
25/ or (b) approach it in the limit, by probabalistically self-cancelled the error out? I don't know. ...but I'd like to learn.
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Replying to @MorlockP
ⓘ Dogs don't have thumbs Retweeted Honktrain
26/ Yes, watched his entire brass clock video, and intend to build one myself someday (retirement?)https://twitter.com/Nitetrain_1/status/859036462398021633 …
ⓘ Dogs don't have thumbs added,
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Replying to @MorlockP
How man who going to live 4ever going 2 retire? You very clever boy! Back 2getting my books ready. J/k but seriously yr arms could fall off.
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"live for ever" I've got new sympathy for the whole "praying for death" stance right nwo
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