hat
2. avèk ekspozisyon inite w la pou verticality nan derrick, rotation sou tèt ki mennen nan machine tèt ak vitès woulib lage, talè konsa, pou byen ranje pozisyon,
eng
2. With display unit for verticality of derrick, rotating of top-drive head and lift speed, it is available to fix position quickly and accurately to make sure the stable operation with high precision.