NorthStar 491 echosounder 用户手册
491 E
CHO
S
OUNDER
I
NSTALLATION
M
ANUAL
Rev A
Part Number GM495
Northstar
a unit of Brunswick New Technologies Marine Electronics
30 Sudbury Road
Acton, Massachusetts 01720
www.NorthstarNav.com
Service: 978/897-6600
Sales: 800/628-4487