iGaging SPC USB Wireless for Absolute Electronic Measuring Tools Use the data from your iGaging Absolute caliper/DRO/Indicator on a Windows computer. Wireless technology aloows the use of the tool up to 60 feet from the computer Connect 1 iGaging Absolute device to 1 computer. Includes 1 USB Receiver and 1 SPC Transmitter. Tools in photo not included. Acts as a keyboard. For use with any program on windows (e.g. Excel, CAD program, Notepad etc.)