Weather Reporting and Related Equipment

By admin 　http://www.stormcam.org/map-handheld/

what power magnifying glass should i use to read palms?

what power magnifying glass should i use to read palms?
like detailed maps. i seen one which is 3x. is that good enough? i want a handheld one.

I use a model like this one:

http://www.pcbsupplies.com/servlet/the-289/Reading-Magnifier-Glass-10X/Detail

Cheers
Sara

GPSMAP 76 Handheld Navigators gps