Activity 3.3 Making Linear Measurements
How thick is one of the hairs on your head? Could it be measured accurately with astandard inch scale? If the smallest increment on an inch scale is 1/16 inch, then 20average size human hairs could fit within the space of a 1/16 inch gap. The requireddegree of accuracy needed is dependent on the application. If you were to build ahome, a standard inch scale is perfect for laying out walls and locating windowopenings. A dial caliper is a precision measurement tool that is often used in thedesign and manufacturing of consumer products and is, perhaps, the most commonof all the precision measurement tools. Engineers, technicians, scientists, andmachinists all use dial calipers to assist the processes of analysis, inspection,engineering design, reverse engineering, and manufacturing.In this activity you will practice making measurements with a dial caliper
1. What additional tools may have helped to measure these parts?
2. Revisit number 1 above. Measure at least five of the dimensions of your part
using a standard ruler and record the measurements in brackets next to each caliper measurement. Which measuring device (the caliper or the ruler) provides the best measurements? The caliper
Why? And because it has the exact measurement and can measure the length and widith and the depth of the object