J. B. Carroll Co. Type MB-2A Navigation & True Air Speed Computer

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Country of manufacture: US,            Date of manufacture: ____
Diameter: 10.9 cm,          Thickness: 0.6 cm,           Weight: 47.6 gms
Materials: All plastic, 2 sided;           Cursor: all plastic, indpendent front and rear cursors
Scales:__
Front:
Back:
Gauge Marks: [       ]
Condition: C1 (Mint, but with slight discoloring on manual)
Came with: Orig. brown plastic slipcase and instruction booklet

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