Equipment

Orthdox Requiem

                                          

Chalk
The tip of the cue is 'chalked' to ensure good contact between the cue and the cue-ball.
Cue
A stick, made of wood or fibreglass, the tip of which is used to strike the cue-ball.
Extension
A shorter baton that fits over, or screws into, the back end of the cue, effectively
lengthening it. Is used for shots where the cue-ball is a long distance from the player.
Rest
A stick with an X-shaped head that is used to support the cue when the cue ball is out of reach at normal extension.
Hook rest

Identical to the normal rest, yet with a hooked metal end. It is used to set the rest around another ball. The hook rest is the most recent invention in snooker.
Spider
Similar to the rest but with an arch-shaped head; it is used to elevate and support the tip of the cue above the height of the cue-ball.
Swan (or swan-neck spider)
This equipment, consisting of a rest with a single extended neck and a fork-like prong at the end, is used to give extra cueing distance over a group of balls.
Triangle/Rack
The piece of equipment is used for gathering the red balls into the formation required for the break to start a frame.
Extended rest
Similar to the regular rest, but with a mechanism at the butt end which makes it possible to extend the rest by up to three feet.
Extended spider
A hybrid of the swan and the spider. Its purpose is to bridge over large packs of reds. Is less common these days in professional snooker but can be used in situations where the position of one or more balls prevents the spider being placed where the striker desires.
Half butt
Usually housed underneath the side of the table, the half butt is a combination of a table length rest and cue which is rarely used unless the cue ball needs to be struck in such a way that the entire length of the table is the actual obstacle.
Ball marker
A multi-purpose instrument with a 'D' shaped notch, which a referee can
(1) place next to a ball, in order to mark the position of it. They can then remove the ball to clean it;
(2) use to judge if a ball is preventing a colour from being placed on its spot;
(3) use to judge if the cue ball can hit the extreme edge of a "ball on" when awarding a free ball (by placing it alongside the potentially intervening ball).