AFE AS-5 Ruler 41 cm

The AFE AS-5 Ruler 41 cm is a precision aeronautical navigation tool, indispensable for pilots and flight students. Made from high-quality thick Plexiglas, it ensures durability and transparency for clear and accurate reading of aeronautical charts. Its beveled edges facilitate smooth gliding over charts and minimize parallax, improving measurement accuracy.

This ruler is designed to offer versatility in measuring distances on different scales used in aviation. The outer edges are meticulously marked with nautical miles (NM) on 1:500,000 and 1:250,000 scales, allowing for precise flight planning on various navigation charts.

On the center line of the AFE AS-5 Ruler, statute miles (SM) and kilometers (KM) are marked on a 1:500,000 scale. This additional feature makes it a useful tool for unit conversion and flight planning involving terrestrial references.

A prominent feature of this ruler is its 10 nautical mile wide scale (on the 1:500,000 scale). This specific width is designed to aid in the calculation of Minimum Enroute Altitude (MEA), allowing pilots to visually determine areas within which a minimum altitude is required to ensure flight safety over terrain and obstacles.

With a length of 41 cm, the AFE AS-5 Ruler offers a suitable length for comfortably working with most aeronautical charts without being excessively large for handling in the cockpit. Its robust construction ensures that it remains accurate and functional for many years of use.

The AFE AS-5 Ruler 41 cm is an essential investment for anyone involved in air navigation. Its precision, versatility, and the specific feature for MEA calculation make it a valuable tool for both ground planning and in-flight use.