Plunge router

treating edges of timber as well as making joints or trenches

Trimmer

cutting excess veneer from edges but it can be used like a router but for smaller jobs

Router

without plunging

Used for shaping the edges of timber projects, or joints and trenches

Mortise gauge

marking two parallel lines to the edge of timber

Marking gauge

making ONE parallel line to the edge of the timber. Usually for marking out timber joints.