What ㏿ means
It marks acceleration measured in gals.
One gal equals 1 cm/s²; technical references also write the unit symbol as Gal.
Japan's Meteorological Agency uses gal for measured earthquake acceleration and cautions that peak acceleration alone does not determine seismic intensity. A 1914 note says seismologist Wiechert used gal in a 1909 report for Göttingen's earthquake station in Germany; it links the unit name to the first syllable of Italian astronomer Galileo. Unicode's East Asian compatibility mapping spells this box as lowercase gal.
Don't confuse it with
1gal In English, gal is also an informal word for a woman; here it labels an acceleration unit.
Questions people ask
1Why does ㏿ show as a box on some devices?
Because that device's fonts have no glyph for it. The character is still correct and still copies correctly — the box is a missing glyph, not a broken character.
How to type or find ㏿
- Search it as
- gal · earthquake gal · acceleration unit · Galileo
- Shows up in
- Anything that takes text · its shape is whatever your font draws
Codes and encoding1 code points
A visible symbol can contain several code points. JS .length counts UTF-16 units; UTF-8 counts bytes.
