This 56 page booklet explains how to use the Jeppesen Computer, a circular slide rule used by navigators to calculate time, speed, distance. Faded with minor signs of use otherwise in very good vintage condition 8¼" - 21cm by 5½" - 14cm approx.

(This and other items are from the home of a late relative who flew professionally in the forties and fifties and travelled extensively afterwards.)

Bid with confidence Mgbuyer has been selling on eBay for 28 years with 100% positive feedback. 

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