Talk:Abbe error

Stop reverting the removal of the gibberish!

There's a paragraph of text that's incomprehensible in English, and is evidently machine-translated German. There is no word "Antastsensor" in English. Google results show only this page and German results when looking for that term. There's also the fact that the noun "Pitch" was capitalised; nouns are capitalised in German but not English.

I'm posting this here because I see people have tried to remove this paragraph twice, and their edits were reverted (once by an anti-spam bot). No, really, the paragraph is almost total nonsense. Either rewrite it or leave it out, please. 124.168.82.155 (talk) 08:21, 2 September 2015 (UTC)

Diagram

After cmglee (talk · contribs) asked for feedback on File:Abbe error.svg, jhawkinson (talk · contribs) wrote

@CmgleeI do have some thoughts on the image; is this the right forum, though? Basically, I think it is a little bit hard to read because of overlapping items. If you're a machinist or someone else quite familiar with calipers and micrometers, it's pretty easy to read and understand. But if you're a lay person trying to understand what Abbe error is, you're going to get very confused very fast. Some quick thoughts:

• Don't overlap the text "Measurement axis" with the micrometer. Move the text down and use a pointed callout arrow, or move the text to the left or right of the instrument.
• Dim/mute/grey out the details of the micrometer and the caliper, i.e. the tick marks and the numbers. Those are (I think) not particularly helpful for the lay person in understanding the instrument, and they help make it clear that the measurement axis is what we want to talk about. (It seems like it is necessary for the measurement axis line to be illustrated in a way that overlaps the instrument, since that's what it is).
• Consider extending the measurement axis lines further left/right beyond the bounds of the instruments (technically they already do that, but they could extend rather further).
• The h, θ, ε triangle is far too small. I'm not sure how best to fix that. One would be to have a zoom rectangle that blows up only that portion of the graphic. Another would be to swap the caliper and the micrometer such that the caliper was on the bottom, and then extend the triangle further down so that it is larger; this approach may have problems.
• There is an open shape created by the the h line, the ε, and the slanted right edge of the moving jaw, and all of them have a dotted line. I do not understand what this dotted line is indicating, and that is confusing to me. Actually, I'm not sure why there are two lines on the right edge of that jaw. One is the jaw itself and one is something else, and I do not know which is which or what.
• Usually, angles are marked within the angle with a ∡ symbol inside the triangle. There isn't space to do that here, so the θ is marked outside of the angle. That is confusing, and I'm not sure that reasonable person who did not know what θ was here would correctly identify it.

The reason I suggested initially in the es that "probably more than one" diagram might be necessary, is that I think it's very helpful to have this kind of diagram with a caliper and a micrometer, but I also think there should be another diagram that is more accessible to people not familiar with those tools. I am…not quite sure what a good example might be, though, I have not given this sufficent thought.

Thanks. Sorry if this is more than you bargained for. jhawkinson (talk) 20:06, 28 March 2024 (UTC)

cmɢʟee⎆τaʟκ 02:34, 30 March 2024 (UTC)