Woodworking measuring instruments

thumb|right|upright=1.3|A variety of rulers thumb|right|A carpenter's rule thumb|right|Retractable flexible rule or tape measure thumb|right|A closeup of a steel ruler thumb|A ruler in combination with a letter scale

instrument with a sealed tube of liquid, designed to indicate whether a surface is horizontal (level) or vertical (plumb)

weight, usually with a pointed tip on the bottom, suspended from a string and used as a vertical reference line

thumb|A vernier caliper clamping on an object|330x330px

flexible ruler used to measure size or distance

woodworking or a metal working tool used for marking 90° angles and measuring a piece of wood

handtools for marking and checking 90° and 45° angles

tool used in woodworking and metalworking to mark out lines for cutting or other operations

thumb|right|An ornate 18th century iron straightedge A straightedge or straight edge is a tool used for drawing straight lines, or checking their straightness. If it has equally spaced markings along its length, it is usually called a ruler.

tool for marking straight lines

flat tool used in carpentry to mark right angles and calculate angles

tool used to mark angles in woodworking

instrument used to measure moisture content

tool for layout and point marking

type of spirit level that allows for the leveling of planes in two dimensions at once

measuring and marking tool