直径サイン ⌀
記号の意味
Diameter is a segment (chord) connecting two points on the circle passing through its center. Basically, the diameter indicates the length of this segment. It equals to two radii. In formulas it is represented by the Latin letter 「D」. The word itself comes from the Greek 「diametros」 (diameter).
The diameter sign is a circle crossed out by the above-mentioned segment. For clarity, the ends of the segment go beyond the circle, which is technically wrong. The diameter sign is similar to the 「o with stroke」 used in some Latin-based alphabets. Besides, the number 「zero」 is often written with a stroke to distinguish it from the letter 「o」.
Usually, the sign of the diameter is used on part drawings. It stands before the number on the dimension line: 「⌀ 40 cm」. The diameter can be specified for both cylindrical and conical parts. For example — the cylindrical shaft or conical adapter sleeve.
Diameter symbol alt code
It can also be typed under any keyboard setting by pressing NumLock, holding down the Alt key while typing 0216(for uppercase) or 0248 (for lowercase) on the numeric keypad, provided the system uses code page 1252 as system default.
シンボル「直径サイン」は「その他の技術用記号」ブロックの「その他の技術」サブブロックに含まれており、1993年にUnicodeバージョン1.1の一部として承認されました。
| ペアミラーブラケットのタイプ (bidi) | None |
| 構成の除外 | No |
| ケースチェンジ | 2300 |
| シンプルなケース交換 | 2300 |
| Grapheme_Base | + |
| scripts | Common |
| Pattern_Syntax | + |
| コーディング | hex | dec (bytes) | dec | binary |
|---|---|---|---|---|
| UTF-8 | E2 8C 80 | 226 140 128 | 14847104 | 11100010 10001100 10000000 |
| UTF-16BE | 23 00 | 35 0 | 8960 | 00100011 00000000 |
| UTF-16LE | 00 23 | 0 35 | 35 | 00000000 00100011 |
| UTF-32BE | 00 00 23 00 | 0 0 35 0 | 8960 | 00000000 00000000 00100011 00000000 |
| UTF-32LE | 00 23 00 00 | 0 35 0 0 | 2293760 | 00000000 00100011 00000000 00000000 |
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