FELSENTHAL INSTRUMENTS CO., Chicago, Illinois / USA          (1960)
*******************************************************************
F L I G H T   C O M P U T E R    TYPE  » MB-9 «   FSN 6605-542-1428

Upper Picture = BACK SIDE                FRONT SIDE = Lower Picture
===================================================================
CONTENTS OF THE INSTRUCTION MANUAL:

 o  Ground Speet, Time and Distance
 o  Conversion of Minutes to Hours and Vice Versa
 o  Conversion of Nautical Miles to Statute Miles, and Kilometers
 o  Fuel Consumption Computation
 o  Determination of True Altitude
 o  Determination of Density Altitude
 o  True Airspeed Using Mach Number Index, and True Free Air
    Temperature, or Standard Atmospheric Altitude
 o  Special Instructions for Obtaining True Airspeed in Aircraft
    Which have a Mach Meter but no Air Temperature Indicator
 o  Cross Wind Components, and Drift Angle, from Pressure
    Patterns by the D2-D1 Methode
 o  Determination of the Relative Wind Angle, Wind Components,
    Correction Angles and Ground Speed
 o  Off-Course Corrections
 o  The Interception Problem
 o  Pressure Pattern
 o  Conversion of Minutes of Longitude to Miles
    at Various Lattitudes
 o  Determination of Standard Temperature at Various Altitudes
 o  Radius of Action
 o  Use of the TAS, Mach Number, and Temperature Rise Scales
 o  Mach No. TAS Determination

REMARKS:
===================================================================
The  » MB-9 «  is made of plastic.  It came in a brown soft plastic
case including the 38 pages  » HANDBOOK OF OPERATING INSTRUCTIONS «

                      Historical Remarks ...
impressum:
*******************************************************************
© C.HAMANN       http://public.BHT-Berlin.de/hamann        11/29/14