0 2 Pcs Needle Storage Case with Magnetic.
【Design 】 The easy-to-read swing arm pointer and ultra-wide stable base provide accurate test results. This product is designed with an automatic level function, can automatically identify the level to avoid errors
【Wide Application】The aquarium saltwater hydrometer can perfectly test the salinity and specific of brackish water and marine fish , including the solubility and specific scale. At the same time, it is very suitable for fresh water and sea water.