The app is FREE, and intially comes with 25 Turning Points or IDs. The IDs are inexpensive "consumables" that you must purchase to record the site readings.
Sites are initiated by supplying information, such as site name, address, etc. You then can enter the initial readings:
• Temporary Benchmark (TBM)
• Backsight (BS)
• Instrument Height (IH)
Once you have the initial readings, you can enter the Foresight (FS) readings. The "reduction" of each Foresight reading is computed immediately.
The final reduced readings are saved on the iPhone, or sent by email for later printing.
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