Bench tools — function of a mortise gauge in carpentry/layout work A mortise gauge is primarily classified as which type of hand tool used for layout and marking?

Introduction / Context:
Accurate layout is the foundation of precise woodworking and patternmaking. A mortise gauge is a specialized gauge used before cutting joints such as mortise and tenon. Understanding its category clarifies how it is used in sequence with measuring and cutting tools.

Given Data / Assumptions:

• Mortise gauge is fitted with two adjustable spurs (pins) mounted on a sliding head.
• Used to scribe two parallel lines equidistant or at a set spacing from an edge.
• Purpose is layout, not material removal.

Concept / Approach:
A marking tool creates scribed reference lines on the work. The mortise gauge allows setting the width of the mortise to match the chisel and then scribing parallel lines simultaneously, guaranteeing correct fit. It is neither a striking tool (which delivers impact), nor a planing or boring tool (which remove material), nor chiefly a measuring instrument (although it is adjusted by measurement).

Step-by-Step Solution:
Identify function: scribing parallel layout lines.Classify by purpose: marking/layout tool.Select “marking tool”.

Verification / Alternative check:
Workshop manuals place the mortise gauge in the family of marking gauges alongside cutting gauges and panel gauges.

Why Other Options Are Wrong:

• Striking: hammers/mallets deliver impact, not scribe lines.
• Planing: planes shave surfaces; gauges do not.
• Boring: drills/augers remove material; gauges do not.
• Measuring: although you set distances, the primary action is marking.

Common Pitfalls:
Confusing a marking gauge with a cutting gauge; a mortise gauge has dual pins for two lines, not a single cutter.

Final Answer:
marking tool