Portion aid for 38mm plastic gallon bottles. Gives accurate measurements. Eliminates product waste. Use with cleaners, disinfectants, detergents or concentrates. Eliminates extra cost of proportioning bottles. Ounce and cc calibrations molded-in on sides. To use, just squeeze bottle to desired amounts, then pour. U.S. design patent. Measures 15" length by 3" height by 2" depth. 3 oz cup capacity. Translucent color.