2-Point Resection is a free Android application developed by SurveyApp that is designed for calculating the coordinates of an instrument. It requires the coordinates of the backward point, the distance between the instrument and backward point, the coordinates of the forward point, the distance between the instrument and forward point, and the opening angle between the backward and forward points.

One of the standout features of this app is the ability to enter the angle in a decimal number. Additionally, users can switch the display of results between 3 decimal or 10 decimal points by tapping on the N or E display box. The app also includes a manual for reference.

Overall, 2-Point Resection is a useful tool for those in the surveying industry or anyone who needs to calculate coordinates. It is easy to use and provides accurate results.