🔍 Key Concepts

• Purpose of the tool – what kind of measurement or setup it is used for in machining or metal work • The shape of the edges and notches – look at the V‑shaped angles and the scale marks • Difference between tools that measure drill size versus tools that check thread or tool angles

💭 Think About

• From the illustration, ask yourself: is this tool checking diameters/holes, or is it checking angles and pitch related to screw cutting? • Look at the pointed ends and V‑notches: what common machining operation needs a precise included angle like that? • Which of the answer choices would most likely be used to align or verify the angle of a single‑point cutting tool on a lathe?

✅ Before You Answer

• Identify whether the scale and markings are for angles or hole diameters • Notice that there are several V‑shaped notches and pointed tips—decide which listed gage type normally has that form • Eliminate any choices that are normally associated with round holes rather than V‑shaped profiles