Ergonomic silicone grip and complete accessory ( calibration tool, carry case) ensures hassle less operations during mobile inspections Perfect for food industry technicians sauce manufacturing engineers adjusting cutting fluid ratios with reliabled concentration data Features imported optical for clear separation and metal calibration knob to maintain, solve drift issue common in standard refractometers Performs flawlessly in sun exposedly orchards for fruit maturity check or temperature fluctuating workshops for coolant mixture verification This handheld refractometer accurately measure 0-32% ranging with technology, serving double applications in food and industrial ( coolant concentration) testing, Manufacturer: JunsenF