https://upload.wikimedia.org/wikipedia/commons/thumb/a/ac/Square_compasses.svg/250px-Square_compasses.svg.png
https://ja.wikipedia.org/wiki/%E3%83%95%E3%83%AA%E3%83%BC%E3%83%A1%E3%82%A4%E3%82%BD%E3%83%B3

海外で「ドラえもん放送禁止運動」が広がっている3つの理由
https://sora.5ch.net/test/read.cgi/livetbs/1648903996/606-
https://dora-world.com/assets/images/characters/doraemon/gian/d_004_card_detail.png
https://dora-world.com/assets/images/characters/doraemon/gian/d_004_ph001.png