Silva ALPHA 4 Manual do Utilizador descarregar pdf (Página 42)

NAVIGATION

RANGER S

Art. No. 36825-6001

Art. No. 36825-6003 (ME)

Art. No. 36825-6005 (MS)

RANGER SL

Art. No. 34952-1011

Art. No. 34952-1013 (ME)

Art. No. 34952-1015 (MS)

EXPEDITION

Art. No. 35691-0001

Art. No. 35691-0003 (ME)

Art. No. 35691-0005 (MS)

Silva Ranger S features DryFlex™ grip for easy handling

and comes with a use-anywhere declination scale inside

the capsule, a magnifying lens, and base plate map-

measuring in mm and scales of 1:25,000 and 1:50,000.

Ranger S has the additional benefit of 45-degree

angle assistance on the mirror sighting function. A go-

anywhere tool for serious compass users.

Silva Ranger SL is a small sighting compass, ideal as a

reserve or an “always-packed” compass. Built in sun

dial. Can be attached to your jacket with a safety pin,

thereby allowing hands-free navigation. A go-anywhere

tool for serious compass users.

Sun Watch

Silva Expedition features easy-handling Dryflex™

housing, silicon rubber feet for precision map work,

detachable safety-release lanyards, night-enabling

luminous markings, magnifying lens, map-measuring

scales in mm or inches, 1:25,000, 1:50,000 and

GPS scales, plus built-in adjusters for magnetic

declination (including permanent local adjustment).

The Expedition can also map-measure 1:40,000.

Hints & Tips

Planning a Route

Before heading out it is important to al-

ways plan your route. Your navigational

skills, physical condition and choice of

terrain will all affect your plan. Make sure

you create a plan that fits you—it’s always

better to play it safe than to take unneces-

sary risks. Mirror Sighting Compasses A

mirror-sighting compass is at its best in

open terrain where you must determine

direction over long distances. Because

you needn’t lift your eyes from the com-

pass in order to look into the terrain, the

direction determined with the Silva 1-2- 3

System® becomes more accurate.

Judging Distance / Time

It’s good to have an understanding of how

far along your route you’ve traveled, espe-

cially when walking a bearing according

to the Silva 1-2-3 System®. This is nor-

mally done by checking objects that you

pass, but in terrain where these don’t ex-

ist there are two other methods for judg-

ing distance: 1) clock—if you know your

approximate speed (e.g., 4 km/h) you can

easily calculate how long it should take

to travel 3 km (45 minutes); 2) count-

ing steps—if you know your approximate

stride length (e.g. 0.8 m) count each step

with your right foot; in this case it would

take 62 steps to travel 100 meters, or 620

steps/km.

Silva WB 2012.indb 42 2011-09-19 15:28

1 2 ... 37 38 39 40 41 42 43 44 45 46 47 ... 78 79

Comentários a estes Manuais

Sem comentários

Silva ALPHA 4 Manual do Utilizador Página 42

Comentários a estes Manuais

Manuais e produtos relacionados com Lanternas Silva ALPHA 4