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Thread: The horizontal line on the mirror of a mirror compass.

  1. #1
    Ent FishyFolk's Avatar
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    The horizontal line on the mirror of a mirror compass.

    I recently purchased a Silva Ranger S mirror compass. On the mirror there is a vertical line that I guess is a sight line. But across it, ner the top there is also a horizontal line. What is that for?
    Victory awaits the one, that has everything in order - luck we call it
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  2. #2
    Ranger OakAshandThorn's Avatar
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    I've noticed this on a few sighting compasses, but my Sunnto MC-2D doesn't have that, just the vertical line. I cannot remember exactly, but I believe it is a horizontal sighting line so you can get pinpoint accuracy (theoretically, anyway) on the target.
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  3. #3
    Ent FishyFolk's Avatar
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    Quote Originally Posted by OakAshandThorn View Post
    I've noticed this on a few sighting compasses, but my Sunnto MC-2D doesn't have that, just the vertical line. I cannot remember exactly, but I believe it is a horizontal sighting line so you can get pinpoint accuracy (theoretically, anyway) on the target.
    Then the next question would be: how to use it?
    Victory awaits the one, that has everything in order - luck we call it
    Defeat is an absolute consequense for the one that have neglected to do the necessary preparations - bad luck we call it
    (Roald Amundsen)

    Bumbling Bushcraft on Youtube
    Nordisk Bushcraft - The Nordic bushcraft blog and forum

  4. #4
    Ranger OakAshandThorn's Avatar
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    Quote Originally Posted by FishyFolk View Post
    Then the next question would be: how to use it?
    My guess is that you would use the horizontal line to sight laterally onto your intended target and then fixate it to the vertical line.
    My blog, New England Bushcraft

    "Give me six hours to chop down a tree, and I will spend the first four sharpening the axe."
    ~ Abraham Lincoln

    "Be prepared, not scared."
    ~ Cody Lundin

  5. #5
    Ent FishyFolk's Avatar
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    Quote Originally Posted by OakAshandThorn View Post
    My guess is that you would use the horizontal line to sight laterally onto your intended target and then fixate it to the vertical line.
    I did not understand a word of that...hope somone makes a youtube video, lol
    Victory awaits the one, that has everything in order - luck we call it
    Defeat is an absolute consequense for the one that have neglected to do the necessary preparations - bad luck we call it
    (Roald Amundsen)

    Bumbling Bushcraft on Youtube
    Nordisk Bushcraft - The Nordic bushcraft blog and forum

  6. #6
    One with Nature
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    hello,
    If memory serves me, the mirror cross-hair is to obtain a 45 mirror angle. Reading details BobbyBlu has given a more accurate description. I'm sure there was a Ray Mears programme where Ray gave instruction on use of such a compass?
    Regards
    David
    Last edited by David_JAFO; 11-03-2015 at 08:03 AM.

  7. #7
    Hobo
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    Hi All

    I had a quick look around... and ;


    Silva Ranger S Sighting Compass
    29.99
    ADD TO RUCKSACK Add to wishlist...

    DESCRIPTION
    SPECIFICATION
    REVIEWS

    Silva Ranger S Sighting Compass

    The Ranger S compass is a sighing compass, allowing precise land to map bearings to be taken and plotted to the map

    Defining compass features:

    smooth rotating compass bezl allowing alignment of needle with orienting arrow with gloved hands
    sighting 'notch' in compass lid, so that you can accurately locate target
    sighting mirror, allowing pin-point sighting on target and alignment of orienting arrow for the most accurate land to map bearings
    roamer scales for measuring distances, and shown for the most popular scales, being 1:50,000 & 1:25,000
    red 'north' pointer (with luminous mark)
    red orienting arrow giving fool-proof means of taking a bearing (red needle in red orienting arrow)
    night navigation luminous marks shown on the compass needle, either side of the orienting arrow and aligned with sighting 'notch'
    white south pointing needle for allowing simple and accurate back bearings
    0mm to 40mm mid base plate measuring ruler, with 10mm/1cm 'major' marks
    mirror cross-hair to obtain ideal 45 mirror angle
    clip-down cover to protect compass mirror

    Eureka.. mirror cross-hair to obtain ideal 45 mirror angle

    Hope it helps..

    from : http://www.mountainsafety.co.uk/Prod...g-Compass.aspx
    Last edited by Bobbyblu; 10-03-2015 at 09:40 PM. Reason: extra info - accuracy

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