<p>To elaborate on hobbs's comment, that character should actually be <a href="http://unicodinator.com/#2300">⌀, <code>U+2300</code> DIAMETER SIGN</a>, the meaning of which should be self-explanatory.</p>

<p>The character you asked about was <a href="http://unicodinator.com/#00D8">Ø, <code>U+00D8</code> LATIN CAPITAL LETTER O WITH STROKE</a></p>

<p>Of course, it's entirely possible that the wrong symbol was used by the person naming the part in the list you're looking at (perhaps due to poor unicode support, since <code>U+00D8</code> lies in latin-1, but <code>U+2300</code> requires utf8).</p>

CC BY-SA 3.0
2016-09-21T11:52:52.160Z
Or perhaps because Ø has its own key on most keyboards used in Billund.
hmakholm left over Monica
CC BY-SA 3.0
2016-09-23T14:51:11.627Z
http://fontmeme.com/images/danish-keyboard-550x183.png
chicks
CC BY-SA 3.0
2016-09-21T09:53:17.067Z
2016-09-21T10:01:50.843Z
2016-09-21T10:01:50.843Z
Eric
<p>Ø is a pretty <a href="https://en.wikipedia.org/wiki/Diameter#Diameter_symbol" rel="nofollow">standard notation for diameter</a>. So <code>w/Ø 3.2 Shaft</code> means the item has a shaft that has a 3.2(mm) diameter.</p>

CC BY-SA 3.0
2016-09-20T19:10:13.297Z
2016-09-22T18:27:00.230Z
2016-09-22T18:27:00.230Z
Phil B.
<p>It's an international symbol, whose curious intersection between a line segment and a circle visually depicts the concept of a <em>"a measurement exceeding the diameter of a part by some 15%, I reckon"</em>.</p>

CC BY-SA 4.0
2020-03-23T13:28:31.790Z
This is completely incorrect.
htmlcoderexe
CC BY-SA 3.0
2016-09-21T21:35:48.587Z
2016-09-21T21:35:48.587Z
FooBar
<p>Many LEGO part names use a Ø character in the name, for example, Armor For Hand W/Ø 3.2 Shaft (28803) or Beam A 4M Ball/Cup Ø10.2 (90611).  Can anyone explain what the Ø means?</p>

CC BY-SA 3.0
2016-09-21T07:33:16.477Z
It's not a Ø or a ø, it's a ⌀.
hobbs
CC BY-SA 3.0
2016-09-21T08:50:46.657Z
It's not Swedish "crossed O", it's not Greek "capital phi", it's not even Cyrillic "Ef", it's a dedicated "diameter symbol".
Agent_L
CC BY-SA 3.0
2016-09-21T11:51:13.407Z
@Agent_L: Swedish doesn't have Ø; they use Ö instead. Ø is used in Danish, however, which is more relevant for Lego.
hmakholm left over Monica
<piece-information>
Ø in LEGO part names
Bob
# Ø in LEGO part names

(Asked by: username_0 on 2016-09-20)

Many LEGO part names use a Ø character in the name, for example, Armor For Hand W/Ø 3.2 Shaft (28803) or Beam A 4M Ball/Cup Ø10.2 (90611). Can anyone explain what the Ø means?

**Tags:** piece-information

> **Comments:**
> **username_1**: It's not a Ø or a ø, it's a ⌀.  
> **username_2**: It's not Swedish "crossed O", it's not Greek "capital phi", it's not even Cyrillic "Ef", it's a dedicated "diameter symbol".  
> **username_3**: @username_2: Swedish doesn't have Ø; they use Ö instead. Ø is used in Danish, however, which is more relevant for Lego.  

---

## 3 answers

### Answer by username_6 on 2016-09-20. Score: 27

Ø is a pretty [standard notation for diameter](https://en.wikipedia.org/wiki/Diameter#Diameter_symbol). So `w/Ø 3.2 Shaft` means the item has a shaft that has a 3.2(mm) diameter.


---

### Answer by username_4 on 2016-09-21. Score: 14

To elaborate on username_1's comment, that character should actually be [⌀, `U+2300` DIAMETER SIGN](http://unicodinator.com/#2300), the meaning of which should be self-explanatory.

The character you asked about was [Ø, `U+00D8` LATIN CAPITAL LETTER O WITH STROKE](http://unicodinator.com/#00D8)

Of course, it's entirely possible that the wrong symbol was used by the person naming the part in the list you're looking at (perhaps due to poor unicode support, since `U+00D8` lies in latin-1, but `U+2300` requires utf8).

> **Comments:**
> **username_3**: Or perhaps because Ø has its own key on most keyboards used in Billund.  
> **username_5**: http://fontmeme.com/images/danish-keyboard-550x183.png  

---

### Answer by username_7 on 2016-09-21. Score: 0

It's an international symbol, whose curious intersection between a line segment and a circle visually depicts the concept of a *"a measurement exceeding the diameter of a part by some 15%, I reckon"*.

> **Comments:**
> **username_8**: This is completely incorrect.  

---

