With its fixed pointer control mechanism, for accurate readings, when the speed is faster (30 rpm, 60 rpm) can not be reading in the rotation, then gently press the pointer control rod, the pointer fixed, easy to read; is also provided with a fixing bracket and a lifting mechanism, generally in the laboratory were small and constant temperature measurement should be fixed. The instrument is fixed on the bracket to ensure measurement accuracy; helical gear and damping lifting mechanism, to ensure that the lifting of the instrument is stable; extension cable to facilitate the measured liquid containers larger and level is low and measured liquid temperature too high use.