Measuring ruler (定規) - where did it go?

There is a word that means ruler (as in 12-inch measuring ruler) that I am positive used to part of standard Wanikani lessons. It is 定規 in kanji and じょうぎ in hiragana.

I just ran across the word in the wild and didn’t recognize it, then I remembered that it was a Wanikani word and went back to the site so I could unburn it & learn it all over again. But it’s gone! I can’t find it anywhere, either by searching for the component kanji or by searching for the English definition.

Am I not searching correctly, or was it removed? If it was removed, why?

I doubt it was ever a word on WK.

  1. My yomitan dictionaries are far from updated when it comes to WK tags, so if it was on WK previously there’d most likely be a tag on this entry.
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  2. There’s no mention of the word 定規 in the Content Updates corner on the forum. They post updates in WaniKani > Content Updates.
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Maybe you came across it in a context sentence, hence the association of “remember seeing it in WK”?

Okay… what is happening here. I don’t mean to sound conspiratorial but I effectively had this exact same thing happen to me for this same exact word. I even have evidence it’s something I have objectively encountered-

This is a screenshot from my ongoing personal dictionary I have been building- a dictionary I only update with items I come across while learning in an effort to catalogue in one condensed space. It’s sitting there and has been sitting there for a long time now. It’s also not something I passingly saw on like a “heres 10 Japanese words you should know” post on social media or something either since it is specifically in it’s Kanji form- if I only saw it in Romaji or Kana it’s respective row would be green like the sticky note row in the image.

If I’m not learning words from WaniKani, I 9/10 times learned them through Bunpro since I effectively exclusively log things that are in or have been in one of these SRS systems (I pen and paper new things I encounter in standard immersion like manga or video games). However, I have not encountered this word on Bunpro. You can see it still has the “add to reviews” button in place of a progress meter.

I would’ve bet money this term was one I learned through WK since those Kanji are both long since learned on here. Seeing this forum post is making me feel like I stepped into the Twilight Zone. I apologize for making more questions than answers here but this is bizarre

It’s in a context sentence for 幾何学:

幾何学的な図形を描くために、コンパスと定規を使いました。

I used a compass and ruler to draw a geometric shape.

As far as my wanikani data dumps are concerned, it was never an entry on its own.