Construct validity refers to validity of the ideas and concepts used in the research. Constructs are âconceptsâ and âideasâ. This particular validity is often problematic and not clear cut. There is a subjective (interpretive) element in it that makes it somewhat debatable.
The divergence of scale at the poles is a major weakness of the Mercator projection, rendering it unsuitable at high latitudes. Login or Sign Up to answer this question. data-config-site-section=chacha>. What is a Mercator projection A Mercator projection is a mathematical method of showing a map of the globe on a...
Specialized reticle alignment tools can be used at the objective end of the scope to align the reticle to the bore. Some people look at the reticle from the ocular end to align it. Figure 10 shows how horizontal boresight misalignment can result in both of these methods leading to significant reticle alignment errors.