How To Use A Mirror Compass

SILVA 3301231 Mirror Sighting Compass User Guide

HOW TO NAVIGATE

ORIENTING THE MAP TO North

The easiest way to utilise a map and compass together is to orient the map towards N. Simply align the map merid- ians with the compass needle then that "up" on the map is pointing Due north. At present everything on the map is in the same direction equally on the ground. When travelling forth your road, remember to keep the map oriented at all times. By doing this it will exist very easy to follow your route since turning right on the map also means turning right on the ground! Properly orienting the map is quick, easy and the best mode to avoid unnecessary mistakes during your trip!

Easy As one-2-3

1-2-3
Place your compass on the map and use the baseline to brand a straight line between your electric current position and your destination.
Make sure the part with the mirror points towards your destination.

1-2-3
Plow the compass housing until the reddish role of the north/south arrow is parallel with the map meridians and points northward on the map.

1-2-iii
Lift your compass from the map and concord it horizontally in your hand. Plough yourself and the compass until the cerise end of the needle is inside the red north/south arrow. Now the
sighting cantankerous and sight will indicate towards your destination. Have a landmark and start moving.
When using a mirror sighting compass, concur the compass with the mirror tilted to a 45° angle, so that you tin can check your direction past looking at the bezel in the mirror while sighting in the correct direction of travel.

MAGNETIC DECLINATION

When compass and map are used together it'southward important to know the local magnetic declination and how to compensate for it. Magnetic declination is the departure between Geographic North/True Due north (where the
map meridians point) and Magnetic Northward (where the Northward stop of the compass needle points). In areas with pregnant declination, adjustments must be made to walk a right bearing. Information apropos the amount and direction of magnetic declination is shown on topographical maps with a diagram. Use an upwards-to-engagement map for electric current declination.
Declination tin be handled either with a stock-still declination scale or declination adjustment in the compass sheathing. Read more further down in this transmission.

BEFORE HEADING OUT

Always bank check that your compass is performance properly earlier heading
Never betrayal your compass to extreme temperatures (loftier or depression) or to magazine- netic fields such as knives, mobile phones, radio speakers, magnets etc. Such exposure tin cause permanent damage to the compass.

BASIC COMPASS FEATURES

MIRROR SIGHTING COMPASSES

The mirror compass features a mirror that allows you to view the compass dial and the background at the aforementioned time. The fact that the compass dial tin be seen at the same time the reference signal is aligned makes mirror compasses more desir- able for taking accurate bearings.
A mirror-sighting compass is at its best in open terrain where yous must decide direction over long distances. Considering you needn't lift your eyes from the compass in order to expect into the terrain, the direction adamant with the Silva 1-2-3 System® becomes more authentic.

BASEPLATE
LIQUID FILLED CAPSULE
CLINOMETER *
DECLINATION Scale (Stock-still)
DECLINATION Adjustment *
COMPASS NEEDLE
TURNABLE COMPASS HOUSING
GRADUATION RING / GRADUATION SCALE
ORIENTING LINES / ORIENTING Arrow
SCALES
Index LINE
MAGNIFYING LENS *
LUMINOUS MARKINGS/Ring *
Rubber FRICTION FEET *
SIGHTING MIRROR
SIGHTING Cantankerous
SIGHT

ane BASEPLATE

Highly durable baseplate in transparent acrylic plastic. Use the border of the baseplate to get your bearing. Most SILVA compasses has a curved up back end to arrive sit more than ergonomic in your hand.

ii LIQUID FILLED Sheathing

The sheathing is filled with anti-static liquid (customized formula) that ensures clear reading, fast settling time, perfect dampening, stability and accuracy of the needle.

3 CLINOMETER

The clinometer can be used for measuring slopes of terrain, heights, etc. Rotate the Graduation ring until "W' (270°) is at the Alphabetize line. Open cover completely and hold compass at eye level, on its side. The clinometer needle should move freely. Tilt the compass upward, with the terrain. Read inclination from where the inclination needle meets the declination calibration.

four 5 DECLINATION SCALE (Stock-still) / DECLINATION ADJUSTMENT

When compass and map are used together it'south important to know the
local magnetic declination and how to compensate for it. Magnetic declination is the difference between Geographic N/True
Northward (where the map meridians point) and Magnetic N (where the
Due north terminate of the compass needle points). In areas with pregnant declination, adjustments must be made to walk a correct bearing. Data
concerning the amount and direction of magnetic declination is shown on topographical maps with a diagram, identifying Magnetic
Northward (MN) and the degree variance from True Northward (TN). Utilize an up to engagement map for current declination.

Most SILVA

FIXED Calibration

compasses have a stock-still declination correction scale inside the sheathing to simplify the calculations required.

How to: Place the declination variance from your map. In this instance, twenty° east.
Follow the instructions in the SILVA 1-2-three system. Earlier taking a landmark in step 3, turn yourself until the cherry-red terminate of the compass needle points to 20° on the "E.decl." scale.
Keep the compass steady and turn the compass housing until the North arrow coincides with the red terminate of the compass needle once again.
At present the sighting cross and sight volition indicate towards your destination. Take a landmark and start moving.

ADJUSTMENT Spiral

Some SILVA compasses take a declination adjustment screw, located on the bezel.
A small screwdriver can exist institute inside the safety release of the included lanyard.

How to:
Identify the declination variance from your map.
In this instance, 20° eastward.
Turn the screw on the bezel until the lesser side of the
North Pointer meets the 20° at the "East.decl" scale.
Recollect to use the orienting lines at the bottom of the capsule and Non the Due north Arrow as map North reference lines when taking the begetting on the map. After you take adjusted your compass for declination, the
compass needle all the same points towards magnetic north.

6 COMPASS NEEDLE

Swedish high quality, stainless steel, magnetic needle. The combination of a sapphire gem bearing and a hardened steel pivot minimises friction, which in turn gives rapid and accurate movements. Magnetic North direction accuracy: i caste. The reddish end points to magnetic north!

7 TURNABLE COMPASS HOUSING (BEZEL)

Employ the turnable compass housing to gear up your bearing or when navigating with the SILVA 1-2-3 system. Some of our compasses are equipped with a safe, tactile grip band to make the housing easier to adjust.

eight GRADUATION RING / GRADUATION Scale

The bending betwixt true North and the management of travel is called begetting (the management from where you lot are, to where you want to become). The value of this angle tin exist read directly off the scale on the graduation ring. Our compasses have either a graduation scale divided into 360 degrees or 6400 mils. The Graduation ring is also marked with the central points (N-S-E-West) on some models.
If you rotate the graduation band to line-up the red north of the compass needle to the N pointer, a bearing can be taken from the graduation scale at the alphabetize line.

9 ORIENTING LINES/ORIENTING ARROW (North Arrow)

All our outdoor compasses have red/black north-south lines and arrow in the sheathing lesser ensure easy and prophylactic settling. The lines and pointer are stock-still inside the compass housing, aligned to north on the graduation ring and designed to exist aligned with the map meridians. Half the lines/arrow are coloured red to indicate north. The lines are used to align the compass housing with the map in step 2, when navigating with
the SILVA 1-2-3 system.

x SCALES

On the baseplate you'll find scales for measuring distances etc. on a map. The type and number of scales varies between each SILVA compass model. The scales and
prints on most SILVA compasses are "hot stamped" to ensure extra durability.

MAP MEASURING SCALES

A map is a reduced picture of the terrain. The adamant proportion betwixt the distances on the map and the corresponding distance on the footing is called a map calibration. To obtain the corresponding distance in the field, the distance on the map must be multiplied by the divider of the scale. The virtually common scales are 1:10 000, i:fifteen 000, i:25 000 and ane:50 000. For example, the scale one:10 000 means that ane cm on the map corresponds to 10 000 cm = 100m in the terrain.

RULER

If the map calibration is 1:l 000, and your compass has the corresponding map measuring scale, use this to measure distance.
If your compass lacks the corresponding map measuring scale, utilise the regular Metric or Purple Ruler constitute on the edge of the baseplate.
Case: If the map scale is 1:50 000, and so i mm on the map = 50m in the terrain.
Example: If the map scale is 1:24 000, and so 1 inch on the map = 24000 inches (2,000 feet) in the terrain.

ROMER SCALES

Apply the Romer coordinate scales on the baseplate to measure distance or accurately work out a sixfigure grid reference that lets you determine the coordinates of a known position on the map (or to determine the position of known coordinates on the map).

11 Alphabetize LINE

The index line is fixed beneath, or at the outer edge of the graduation scale every bit an extension of the sighting cross and sight. It marks the bearing you lot set past rotating the compass housing.
If you rotate the graduation ring to line-up the reddish north of the compass needle to the North arrow, a bearing tin be taken from the graduation scale at the index line.

12 MAGNIFYING LENS

Built in magnifier for detailed map reading.

13 LUMINOUS MARKINGS/Band

Our compasses have luminous markings and/or graduation band for compass reading in the night. Once activated by daylight/flashlight they will give calorie-free upwards to 4 hours of light. The markings are commonly
placed at the Northward arrow, the index line, the sight and n office+pivot of the compass needle.

xiv Safety FRICTION FEET

Silicon rubber friction feet for precision map piece of work. Placed at the lesser side of the baseplate.

fifteen SIGHTING MIRROR

Using a Sighting compass increases the accuracy in the compass field piece of work. The mirror enables the user to simultaneously sight the begetting in the terrain while checking that the compass needle is aligned with the N arrow in the compass housing.
A mirror-sighting compass is at its all-time in open terrain where you must determine direction over long distances. Because y'all needn't lift your eyes from the compass in gild to look into the terrain, the direction adamant with the Silva i-ii-iii System® becomes more accurate
.
When using a sighting compass with a mirror, hold the compass at middle level with the mirror tilted to a 45° angle (the horizontal part of the sighting cross shall align with the middle of the compass housing). At present yous can check your direction past looking at the bezel in the mirror while sighting in the right direction of travel at the sighting cross and sight.

xvi SIGHTING CROSS

The vertical part of the sighting cross shows the direction that yous want to travel forth or the bearing you lot are taking. It is aligned with the index line and the sight. The
horizontal part helps you lot setting the mirror at a correct bending.

17 SIGHT

See 15, Sighting mirror

SCALE LANYARD

The scale lanyard makes it easier to quickly make a distance judgement of your route or to plan your route in advance. The distance lanyard has 2-4 scales on it; 1:24 000, ane:25 000, ane:50 000, and 1:62 500, which facilitates to measure the altitude of your hike. Since the lanyard is soft and bendable information technology'southward like shooting fish in a barrel to identify information technology directly on to your route on the map.
The lanyard has a safe release that opens if the lanyard gets stuck.
For compasses that have declination adjustment, simply use the screwdriver in the lanyard's condom release to make the aligning. Pull the safety release apart and utilize the screwdriver to turn the screw on the bezel.

Gradient CARD

The slope card is great both for detecting barrage risk and for determining how challenging your journey will exist. By knowing the slope yous tin can also approximate any extra distance
that you need to go due to the slope.

Left side is for the following map scales:
i:25k, Contour Interval five
1:50k, Contour Interval 10
1:100k, Contour Interval 20
1:24k, Contour Interval 20 (The states version)
Right side is for map scale:
one:25k, Contour Interval 10
1:24k, Contour Interval 40 (US version)

Contour interval is the number of contours in between thebindex contours (thicker contours on the map)
The centre of the slope card gives you data on the extra altitude you lot need to walk per 100 meter (yards, US version) at that specific angle. For instance when walking a slope with an bending of 45 degrees you need to walk an extra 41m (yd) per 100 meters (yards).
How slope card is used:
Decide map calibration and contour interval that is written on the map
Determine the bending that matches the index contours (thicker contour lines). This will give you the actual angle on that specific identify on the map. If the map are missing index contours
y'all tin can measure betwixt the individual contours. This measurement is not every bit exact.
By matching the map index contour or contour lines with the lines on the card, the slope bending can be determined. Below case shows matching of the index contour lines.

MORE Data

CAN I Utilize MY COMPASS IN ANY Role OF THE WORLD?
Most SILVA compasses are balanced for one of 3 magnetic zones. Using your compass in the "incorrect" zone volition cause the needle to tilt and may issue in information technology getting stuck against the roof/floor of the capsule and showing an incorrect north. SILVAs compasses are balanced in three different zones:
MN (Magnetic Northward), ME (Magnetic Equator), MS (Magnetic South). Make sure to purchase a compass for the magnetic zone you lot will navigate in.

MORE INFORMATION

Can I Utilise MY COMPASS IN Whatsoever Role OF THE WORLD?
Virtually SILVA compasses are balanced for one of iii magnetic zones. Using your compass in the "wrong" zone volition crusade the needle to tilt and may result in it getting stuck against the roof/floor of the capsule and showing an incorrect n. SILVAs compasses are balanced in three unlike zones: MN (Magnetic North), ME (Magnetic Equator), MS (Magnetic South). Make sure to buy a compass for the magnetic zone you will navigate in.

SILVA GLOBAL COMPASSES

Some of our almost popular compasses have now been equipped with a global needle that tin be used in all three magnetic zones.
The global needle makes the compass flexible and possible to utilise all around the earth. Read more at www.silva.se.

Take CARE OF YOUR COMPASS

A SILVA compass will, if treated carefully, be a navigation partner for many, many years. Ever check that your compass is functioning properly earlier heading out.

Never expose your compass to extreme temperatures (loftier or low) – this can deform the plastics with a leaking compass sheathing as a upshot.
Avert dropping the compasses on hard surfaces and handle it with care.
Don't store or identify the compass close to strong magnetic fields such as knives, mobile phones, radio speakers, magnets etc. This can cause reversed polarity of the compass needle which volition issue in it pointing south instead of north.

WARRANTY

SILVA warrants that, for a period of five (5) years, your SILVA product will be substantially free of defects in materials and workmanship nether normal use. SILVAs liability under this warranty is limited to repairing or replacing the product. This express warranty extends only to the original purchaser. If the production proves lacking during the warranty period please contact the original place of purchase. Make sure to accept your proof of purchase on mitt when returning the product. Returns cannot be processed without the original proof of purchase.
This warranty does not employ if the production has been altered, not been installed, operated, repaired, or maintained in accordance with instructions supplied by SILVA, or has been subjected to aberrant concrete or electric stress, misuse, negligence or blow. Neither does the warranty embrace normal wear and tear. SILVA is not responsible for whatsoever consequences, direct or indirect, or damage resultant from use of this product. In no event will SILVAs liability exceed the amount paid by y'all for the product. Some jurisdictions practise not allow the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to yous. This Warranty is valid and may be processed only in the land of purchase.

Documents / Resources

References

Silva.se – Pannlampor, Kompasser och Vattentäta Väskor sedan 1933 – Silva Sweden silva-logo American Limited Apple Pay Google Pay Klarna Maestro Mastercard Shop Pay Visa