Fortis Easy Math Slide Rule Compass Watch


Offered is this Fortis Easy-Math Watch that winds, sets, and runs great. It keeps excellent time. The crown at 2 operates the internal rotating bezel and second crystal below the watch crystal that is seated into the rotating bezel so that the compass points and minute timer may be rotated as well. The outer portion of the internal bezel functions as a slide rule (as in the Breitling Navitimer). The gray portion of the rotating crystal can be used as a minute timer by lining up zero with the minute hand to count time up to 60 minutes.  The compass portion of the crystal rotates to help determine direction. If you place the watch horizontally and point the minute hand at the sun, the point half way between the minute hand and 12 is due south. One can then line up the south pointer on the internal rotating crystal at this point, and use it to determine other directions.

BRAND:  Fortis


CASE:  Chrome Plated Bezel, Steel Back

CASE BACK:  Screw-down, marked Easy-Math, Brev. + Etrangers, 7242, Water Resistant 5 ATM, Swiss Made, Incabloc, Stainless Steel Back, and inside marked Fortis Watch, Ltd., Swiss

BAND/BRACELET:  Brand New Genuine Leather Blue Strap with Stainless Steel Buckle

MOVEMENT:  Mechanical, marked Fortis Watch Ltd, Seventeen 17 Jewels, Swiss Made

SIZE:  38mm without crown | 45mm lug to lug

CROWNS:  Good, showing some wear, marked with the Fortis Logo


     CRYSTAL:  Excellent, new, with no cracks

     CASE:  Good, showing some wear of the chrome plating

     DIAL:  Excellent, marked Fortis Easy-Math, and T Swiss Made T at the 6 position, with rotating slide rule inner bezel, and inner crystal with compass markings and 60 minute timer

     HANDS:  Excellent

     BAND:  Brand New

Guaranteed to arrive in fine working order, or your money back, or return for a refund for any reason within 7 days if not satisfied. I am a NAWCC (National Association of Watch and Clock Collectors) member and stand behind what I sell.

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