The invention relates to a device for measuring lateral displacement of a
casing in a vertical bore and includes an inclinometer probe, a cable, and
a cable reel with electronics mounted in the reel hub. The probe contains
two servo-accelerometers, a microprocessor and an electrical circuit. The
servo-accelerometers provide analog signals that indicate the inclination
angle of the vertical bore hole. The electrical circuit converts the
analog signal from each servo-accelerometers to a digital signal which is
read by the microprocessor. The microprocessor analyses the data and
transmits the digital encoded data over a twisted-pair cable to a digital
display unit connected to the cable reel hub. DC power for the probe is
provided by the electronics in the reel hub over the same twisted-pair
cable.
