These handheld coolant/antifreeze refractometers measure the freezing point of propylene glycol and ethylene glycol, and the specific gravity of battery acid. They both have automatic temperature compensation (ATC).

• Large, sharp display scales with high contrast
• High-quality optical glass material for consistent, accurate readings
• Durable, industrial-grade design with non-roll stand feature to keep unit secure on flat surfaces
• Tactical, non-slip Rubber Grip on body to block transmission of hand heat reducing temperature effects
• Prism encased in all-metal housing allowing sample and prism to reach temperature equilibrium quickly
• Maximum sample temperature: 90 °C (194 °F)
• Five year warranty

These coolant/antifreeze refractometers feature the largest, easiest-to-read scale available with clear, sharp figures, screen shading and incredible contrast. This significantly enhances overall precision, even when several different people use the refractometer. These coolant refractometers also come with a rubber grip on the body, which blocks the transmission of hand heat to eliminate temperature errors.