Disc-Type (PG) Anti-Freeze Tester 
Professional 16 1/4" disc-type tester is used to test propylene glycol-based antifreeze in automotive radiators and fresh-water systems in RVs and boats. Number of floating discs measures level of protection. Temperature compensating tester is accurate whether coolant is hot or cold. Readings in Celsius and Fahrenheit.
Shipping Weight 0.35 lb
Availability: In stock.