This character is a Other Symbol and is commonly used, that is, in no specific script.
The glyph is not a composition. Its East Asian Width is wide. In bidirectional text it acts as Other Neutral. When changing direction it is not mirrored. U+1F4CF offers a line break opportunity at its position, except in some numeric contexts.
The CLDR project calls this character “straight ruler” for use in screen reading software. It assigns these additional labels, e.g. for search in emoji pickers: angle, edge, math, ruler, straight, straightedge.
This character is designated as an emoji. It will be rendered as colorful emoji on conforming platforms. To reduce it to a monochrome character, you can combine it with Variation Selector-15: 📏︎ See the Emojipedia for more details on this character’s emoji properties.
The Wikipedia has the following information about this codepoint:
A ruler, sometimes called a rule, scale or a line gauge or meter stick, is an instrument used to make length measurements, whereby a length is read from a series of markings called "rules" along an edge of the device. Usually, the instrument is rigid and the edge itself is a straightedge ("ruled straightedge"), which additionally allows one to draw straighter lines.
Representations
System
Representation (click value to copy)
Nº
128207
UTF-8
F0 9F 93 8F
UTF-16
D8 3D DC CF
UTF-32
00 01 F4 CF
URL-Quoted
%F0%9F%93%8F
HTML hex reference
📏
Wrong windows-1252 Mojibake
ðŸ“
Encoding: GB18030 (hex bytes)
94 39 DE 31
RFC 5137
\u'1F4CF'
Bash and Zsh inside echo -e
\U0001F4CF
C and C++
\U0001F4CF
C#
\U0001F4CF
CSS
\01F4CF
Excel
=UNICHAR(128207)
Go
\U0001F4CF
JavaScript
\uD83D\uDCCF
Modern JavaScript since ES6
\u{1f4cf}
JSON
\uD83D\uDCCF
Java
\uD83D\uDCCF
Lua
\u{1F4CF}
Matlab
char(128207)
Perl
"\x{1F4CF}"
PHP
\u{1f4cf}
PostgreSQL
U&'\+01F4CF'
PowerShell
`u{1F4CF}
Python
\U0001F4CF
Ruby
\u{1f4cf}
Rust
\u{1f4cf}
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