Ritchie M-Series Electronic Compass

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Ritchie's M-Series electronic compasses work in electronically challenged positions where conventional magnetic compasses won't. Modern electronics and instruments can wreak havoc on a magnetic compass, but the M-Series is impervious to such interference. The remote, automatic compensation sensor can be located up to 20 feet away for optimum performance, and the highly visible gauge displays conveniently fit into standard panel cut-outs. Ritchie Navigation, Pembroke, MA; (781) 826-5131; www.ritchienavigation.com.