Steel Hook

A steel hook is used for use with very fine threads/yarns (usually cotton, linen, silk, or fingering weight yarn.)  Sizes range from 00 to 14 and the larger the number, the small the hook size. Length 5".

Regular Hook

Regular hooks are for working with lightweight to heavy weight yarns. These hooks are available in aluminum or plastic and are 5"-6" long. Sizes range from B(2) to K(11) and the larger the number, the larger the hook size.

Jumbo Hook

Jumbo hooks are the same as regular hooks only much large and usually made of wood. These hooks are used with very bulky yarns and available in sizes 10, 11, 13, 15, and 16.

Jiffy Hook

Jiffy hooks are made of hollow plastic and used with very heavy yarn or fabric strips. These hooks are 8" long and available in sizes Q and S.

Broomstick Lace Needle

A broomstick lace needle (also called a jiffy lace needle) is a knitting needle used with a crochet hook when making broomstick lace (also called jiffy lace.)  Made of hollow plastic and this needle is available in sizes 17, 19, 35, or 50.

Double-Hook Needle (Also called Double-End Hook)

A >double-hook needle also called a cro-hook  is a special afghan hook used when making double-faced fabric in two colors. This 14" hook is available in sizes F to K plus M and N.

Afghan Hook

An afghan hook is used when working Tunisian crochet (also referred to as afghan stitch.) Tunisian crochet produces a knit-like fabric. This 9", 10", or 14" long hook is available in sizes E to K. 

Flexible Afghan Hook

A flexible afghan hook is designed to hold a large number of stitches and is available in sizes E to K.  This hook is a regular hook with a nylon extension attached.

Tape Measure

A tape measure or measuring tape is a ribbon of cloth, plastic, or metal with linear-measure markings, often in both imperial and metric units. Tape measures are typically made of flexible cloth or plastic.

Ruler

A ruler is the instrument used to rule and calibrated stick for measurement is called a measure. However, common usage is that a ruler is calibrated so that it can be used to measure along distance markings along the edges or to measure the number of stitches.

Yardstick

A yardstick is a tool to measure distances up to three feet (a yard). Most yardsticks are flat wooden boards with black markings at regular intervals and metal tips. Many new yardsticks have imperial units markings on one side (three feet with inch and fractional inch) and metric units on the other side (one meter with centimeter and millimeter) on the reverse side.

Gauge Ruler

A gauge ruler and knitting needle measure is a handy tool for crocheters. The gauge has two measurements on it. There is a ruler to measure the crochet gauge and there are holes to determine crochet hook sizes.

Stitch and Row Counters
Counters are used to keep track of the row or stitch number worked.

Tapestry Needles
apestry needles  are used to connect or sew together knitted pieces and to "weave in" yarn ends. A yarn needle is larger than a tapestry needles to accommodate the thickness of yarn. (See How To Thread A Yarn Needle)

Sewing Scissors - 5"-6" lengths

Embroidery Scissors - used for needlework and small cutting jobs

Crochet Patterns
The dictionary definition of pattern is "anything cut or formed to serve as a guide to cutting or forming objects; as, a dressmaker's pattern." Commercial crochet patterns are developed so the home crater can create a desired garment or project with no knowledge of pattern drafting. 
(see Fiber Images™ Crochet Patterns)