🔍 Key Concepts

• How to read a vernier caliper in inches (main scale + vernier scale) • Identifying the last whole main‑scale division just to the left of the vernier zero • Finding which vernier division lines up exactly with a main‑scale line to get the thousandths of an inch

💭 Think About

• First, decide what the main scale is reading in figure F: How many full inches and how many additional 0.025" (or 1/40") divisions are there to the left of the vernier zero? • Next, scan along the vernier scale and find the single line that best lines up with a line on the main scale. How many thousandths of an inch does that aligned vernier division represent? • Combine the main‑scale reading and the vernier increment you found. Which answer choice matches that combined value most closely?

✅ Before You Answer

• Be sure you are reading figure F only, not the other figures. • Confirm what each small division on the main scale represents in inches before converting to a decimal value. • Double‑check that you picked the exactly aligned vernier line, not one that is just "almost" aligned.