You wish to measure the distance on a Mercator chart between a point in latitude 42°30'N and a point in latitude 40°30'N. To measure 30 miles at a time you should set the points of the dividers at __________.

Question

You wish to measure the distance on a Mercator chart between a point in latitude 42&deg;30'N and a point in latitude 40&deg;30'N. To measure 30 miles at a time you should set the points of the dividers at __________.

Accepted Answer

Option B: 41&deg;15' and 41&deg;45'. On a Mercator chart, distance must be measured near the latitude of the measurement using the latitude scale centered midway between the two points. For 42Þg30'N and 40Þg30'N, the midpoint is 41Þg30'N, requiring a 41Þg15' to 41Þg45' span.

You wish to measure the distance on a Mercator chart between a point in latitude 42&deg;30'N and a point in latitude 40&deg;30'N. To measure 30 miles at a time you should set the points of the dividers at __________.

You wish to measure the distance on a Mercator chart between a point in latitude 42°30'N and a point in latitude 40°30'N. To measure 30 miles at a time you should set the points of the dividers at __________.