The Tactile Low Vision Timer, models 421132 and 421133, is a tactile timer designed for use by individuals who are blind or have low vision. This high visibility kitchen timer has raised, bold, high contrast markings. A rotary center knob allows the user to set a time period by turning the knob clockwise from 1 to 60 minutes. The timer is freestanding, making it easier to find and see in any area of the kitchen. DIMENSIONS (HxDxW): 9 x 2.5 x 7.5 inches. COLORS: White with black markings (model 421132) or black with white markings (421133).