Table:
text: Japanese map symbols
Partial list of symbols for users with visual impairment
Partial list of symbols for users with visual impairment
Symbol GSI Meaning Unicode Description_
◬ ○ Base triangulation surveying point U+25EC Dot in upward-pointing triangle
 ○ Electronic triangulation point  Dot in upward-pointing triangle with flag
⊡ ○ Benchmark U+22A1 Dot in square
⛭ ○ Factory U+26ED Gear without hub
⛯ ○ Lighthouse U+26EF Map symbol for lighthouse
⛮ ○ Power station U+26EE Gear with handles
文 ○ Elementary or junior high school U+6587 Kanji bun
㉆ ○ High school  Kanji bun in a circle
 ○ University  Kanji bun with a smaller kanji 大 (for daigaku) in brackets on top

Question: Which has a unicode of u+22 a1, the benchmark symbol or the factory symbol in Japanese map symbols?