APR E6-B2D Pilot Flight Computer

The APR E6-B2D Pilot Flight Computer is a Deluxe Universal Wind Triangle & T/S/D 4-color computer that calculates flight planning and en route navigation requirements. The unit includes wind slide speeds of 40 to 270 kts or miles, color-coded conversion scales, slide lock, flush compass ring, and write-in TC to CH boxes.
The slide has Nautical and Statute rulers for Sectional and WAC charts, typical east/west magnetic variation diagrams, wind triangle definitions, true heading and true course solutions, and a headwind and crosswind component grid.
Instructions to solve for ground speed, WCA, and headings are printed on the computer and make learning faster and easier. The Time/Speed/Distance computer provides all major navigation computations.
The flight planning side of the wind triangle slide shows formulae for true course to compass headings as well as illustrated examples of east/west magnetic variation. Also displayed are definitions relevant to wind triangle problems and diagrams of true heading and true course solutions.
The headwind and crosswind component grid depicts the relative wind angle in a multi-color graphic for accurate and easy interpretation. Nautical and Statute scales for Sectional and WAC Charts are printed on the sides of the slide.
MEETS FAA AC 60-8 REQUIREMENTS. Custom case. Anodized aluminum.
Dimensions: 4 7/8" x 9 5/8"
Features: 
Complete Instruction Manual includes BONUS Section on Dead Reckoning and Wind Effect Theory Calculations.
Miles and Gallons Scale (Distance)
Off-course & Drift Corrections
Minutes & Hours Scale (Time)
Mach Number Index Window
Slide-Rule Mathematics
Wind Component Grid
Color-Coded Conversion Scales
Microset Alignment
Wind Slide Lock
Flush T/S/D Dial
Altitude Correction
Fuel Consumption
Density Altitude Factors
Conversions: 
Minutes to Seconds
True Airspeed
True Altitude
Temperature
Kilometers
Statute to Nautical to Statute Miles