Constructed with a hardwood body, featuring a knurled brass adjusting screw. Single hardened marking spur.
Specification

A hardwood marking gauge is a tool primarily used in woodworking to mark precise lines on wood surfaces. It consists of a beam with a marking point (usually a pin or a blade) that can be adjusted to different distances from the edge of the wood. Here’s a bit more detail:
Uses:

Marking Lines: It helps in marking lines parallel to the edge of a workpiece, which is essential for tasks like cutting, chiselling, or planing.
Creating Mortises and Tenons: It’s used to mark out the dimensions for joints such as mortises and tenons.
Trimming Wood Edges: Ensures that edges are trimmed accurately and consistently.
Depth Marking: It can also be used to mark the depth of cuts or grooves.

Sealey Hardwood Marking Guage WW002