Time/Speed/Distance computers. "How-to-use" instructions printed right on the unit. Text printed in straight, easy-to-read lines; desired scales and windows located at a glance. Perfectly calibrated 2-color dials eliminate parallax errors. Fully illustrated instruction manual with each model.
APR-303 3-3/4" dia. T/S/D computer with traffic pattern orientator; anodized alum.
APR-304 3-3/4" dia. T/S/D computer with Density Altitude (Denalt); anodized alum.