Vernier Caliper for Students enables the measurement of internal/ external dimensions or depth over the range 12cm or 5 inches. The Vernier Caliper comes with dual scale graduated 0-12cm X 0.1mm, and 0-5 X 1/128 inches. The Vernier Caliper is provided with knurled slow-motion thumb wheel for easy movement of jaws. The Vernier Caliper for Students features steel plated body.