You wish to measure the distance on a Mercator chart between a point in latitude 43°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 43&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;45' and 42&deg;15'. Accurate distance measurement on a Mercator chart requires using the latitude scale centered on the middle latitude between the two positions. Between 43Þg30'N and 40Þg30'N, the midpoint is 42Þg00'N, so the 30-mile span must be set from 41Þg45' to 42Þg15'.

You wish to measure the distance on a Mercator chart between a point in latitude 43&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 43°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 __________.