Use × not x for dimensions

Author: PeterJCLaw

kit/index.md

@@ -41,7 +41,7 @@ As well as the aforementioned boards the kit also contains the following items.
 | MicroCamCon            | 1   | 2 way<br />3.81mm<br />12A                                            | [Farnell 1717047][F-1717047]                | To connect a 5V component to the power board or to connect an external start button
 | USB Webcam             | 1   | Either Logitech C500 or Logitech C270                                 | [Ebuyer 230435][EB-230435]                  |
 | Battery (LiPo)         | 2   | 11.1V 2.2Ah Lithium Polymer                                           | N/A                                         | Please read the [documentation](/docs/kit/batteries) for storage and usage information
-| Battery Bag            | 1   | HPI Plazma Pouch LiPo Safe Bag (18x22cm) or Overlander LiPo Safe Sack | [HPI 101289][HPI-101289] [0000153][0000153] | Batteries should always be stored in the battery bag
+| Battery Bag            | 1   | HPI Plazma Pouch LiPo Safe Bag (18×22cm) or Overlander LiPo Safe Sack | [HPI 101289][HPI-101289] [0000153][0000153] | Batteries should always be stored in the battery bag
 | Screwdriver            | 1   | Duratool Precision 2.5mm Slot Screwdriver                             | [Farnell 2103271][F-2103271]                |
 
 [ST7202USBGB]: https://uk.startech.com/Cards-Adapters/USB-2/Hub/7-Port-USB-20-Hub-UK~ST7202USBGB

kit/motor_board.md

@@ -42,7 +42,7 @@ Indicators
 Case Dimensions
 ---------------
 
-The case measures 70x84x20mm. Don't forget that the cables will stick out.
+The case measures 70×84×20mm. Don't forget that the cables will stick out.
 
 Specification
 -------------

kit/power_board.md

@@ -71,7 +71,7 @@ Controls
 Case Dimensions
 ---------------
 
-The case measures 83x99x24mm. Don't forget that the cables will stick out.
+The case measures 83×99×24mm. Don't forget that the cables will stick out.
 
 [Specification](#Specification) {#Specification}
 -------------

kit/servo_board.md

@@ -41,7 +41,7 @@ connector when it is correctly powered.
 Case Dimensions
 ---------------
 
-The case measures 68x68x21mm. Don't forget that the cables will stick out.
+The case measures 68×68×21mm. Don't forget that the cables will stick out.
 
 Servo Control
 -------------

rules/archive.md

@@ -146,7 +146,7 @@ Full details about the game, the scoring method and more, remain available in th
 ---------------------
 
 The 2013 competition, *A Strange Game*, saw thirty teams build robots looking to dominate a game of noughts and crosses.
-Each robot, equipped with six rather large cardboard boxes, attempted to take-over squares in a 3x3 grid in the centre of an arena.
+Each robot, equipped with six rather large cardboard boxes, attempted to take-over squares in a 3×3 grid in the centre of an arena.
 The more squares owned in a row or column, the more points a robot would score.
 For further details about the game see the [full rules]({{ site.baseurl }}/resources/2013/rulebook.pdf).