🔍 Key Concepts

• How to read a vernier caliper (main scale reading plus vernier scale reading) • Identifying the last whole inch and fraction visible to the left of the zero on the vernier scale • Finding which vernier mark lines up exactly with a mark on the main scale to determine the decimal part

💭 Think About

• First, what is the value on the main (fixed) scale just to the left of the vernier zero line for figure G? Is it slightly more than 2.3 inches, 2.6 inches, etc.? • Next, which numbered division on the vernier scale lines up best with a main‑scale mark, and what decimal value does each vernier division represent? • When you add the main scale value and the vernier value, which of the multiple‑choice answers is closest to your combined reading?

✅ Before You Answer

• Be sure you are reading figure G only, not A–F. • Confirm whether each small division on the main scale equals 0.025 inch or 0.05 inch, based on the labeling. • Verify that the vernier mark you choose is the one that is in perfect line with a main‑scale mark, not just very close.