Analog Gauges

Research has shown that analog (needle-dial) gauges take less time and concentration to read than digital gauges. A quick glance at the needle will tell you if everything is within the normal range.

To make analog gauges even easier to read, use small strips of color-coded tape to mark the bounds of the normal operating range. Pilots call these markers "bugs". If the needle is in the red, you know instantly if you have a problem.