The UTM coordinates of point A are 500,000 meters East, 2,000,000 meters North, Zone 17 North. The coordinates of point B are 300,000 meterThe UTM coordinates of point A are 500,000 meters East, 2,000,000 meters North, Zone 17 North. The coordinates of point B are 300,000 meters East, 3,000,000 meters North, Zone 18 North. Which point is associated with the least projection-induced scale error?s East, 3,000,000 meters North, Zone 18 North. Which point is associated with the least projection-induced scale error?

A) Point A

B) Point B

C) The error at both points is 1 part in 2500

The value of scale error is always zero along the two standard lines that run parallel to the Central Meridian. Both lines are at a distance of 180,000 meters from the Central Meridian, in east and west direction, respectively. As the distance from the standard lines increases, Scale Error also increases. As the Eastern distance of point A is higher than that of point B it has higher scaler error (The scale factor at the central meridian is 0.9996). Hence, point B has least scale error.