Robinairs 220 pound (100 Kg) refrigerant scale features an ergonomically contoured molded housing with handle that is easy to carry and store. With high accuracy (0.5 oz.) and resolution (0.1 oz.), along with an easy to read display that shows measurements in lbs./oz., decimal lbs., and kilograms - this versatile scale is ideal for professional A/C technicians. Simple to use with just 3 control keys to manage functions: On/Off, automatic zeroing, and measurement units. Generous 9 inch square platform accepts most tanks - perfect for both charging and recovery. Powered by one 9V battery (included). Robinair, a Bosch Automotive Service Solutions brand, is a global leader in service tools and equipment based in Owatonna, Minnesota. Robinair is recognized throughout the world as the quality and performance leader in AC/R evacuation tools and this position has led to its success with the full range of products that serve the heating/ventilating/air conditioning/refrigeration (HVAC-R) and mobile markets, which includes the automotive aftermarket along with other industries such as agriculture and construction.