Salinity Refractometer With ATC & LED

• 2 in 1 design to measure the Specific gravity (sg) of the salt solution and concentration of Nacl
• Easy to use, sturdy design, compact in size and light in weight, convenient to keep up and carry arround. 
• With Built-in ATC (Automatic Temperature Compensation) from 10~30 degree Celsius.
• Soft Rubber eyepiece for comfortable viewing
• Equipped with scale measurement which provides direct reading
• Accurate testing results guaranteed
• Durable and bulit to last long 
• Adjustable manual focusing
• Use ambient light only which means battery or power source is not required\