call distribution to operator (class / ) switching controlled in response to called station addressing signal (class / ) switching apparatus for connecting calling line to operator's position (class / ) divided central (e.g., communication between switchboards) (class / ) having multiple answering jacks...
to degrees run by motor via spicer splitter box hydraulics and compressor selectively controlled compressor : / hr ingersoll-rand brand new years ago winch braden c b hydraulics – ton sandline ramsey # dual drum hydraulic auxiliary hydraulic outlet to run off board equipment (ie. mud pump, casing jacks...