Reversed Shots

A shot ordinarily consists of a set of measurements between a “From” and “To” station. The “From” station is the location where the compass and inclinometer are being used. The "To" station is the target. In a normal shot, the "From" station is the old station that has already been set and the "To" is a new station. A Reversed Shot is the opposite of a normal shot. It goes from the new station to old. This gives an azimuth reading that is turned 180 degrees from the normal value. It also changes the sign of the inclinometer reading.

Reversed Shots vs. Backsights. Reversed shots are sometimes called “Backsights” because they are sighted backwards. But the word backsight is also used to describe the situation where you take two measurements at each shot, one forward and one backward. To avoid confusion, I called this type of backsight Redundant Backsights and Compass has special features for handling them. The Editor has many tools for fixing problems with reversed shots.