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Rifles, Reloading, Optics, Equipment
Long Range Scopes and Other Optics
NIFE 40cm rangefinder
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<blockquote data-quote="LouBoyd" data-source="post: 634160" data-attributes="member: 9253"><p>I'm somewhat familiar with the unit. I'll describe how mine works. It's a coincidence rangefinder and designed to double as a field periscope. To use it, it should stand vertically. The eyepiece is near the bottom. The top objective lens provides the right hand half (your right looking though it)of the image which has two horizontal lines superimposed on it.. The Objective lens approximately in the middle of the unit provides the left half of the image. On the far left side of the field of view is a graduated scale to display the range. The little window just above the lower objective lens provides light for that scale. At One end of the travel of the range knob (to the right above the eyepiece the scale will display an infinity mark (sidways 8). </p><p></p><p>So if you stand it up and look though it you should see one coninuous non inverted and non reversed image in the eyepiece. if the range setting is not correct for the image (at the distance of an object which has a horzontal component in >both< sides of the image) that edge will appear to be offset. When the range knob is correctly adjusted the halves of image will be coincident. Of course other objects in the field at different distances will still appear to be split. </p><p></p><p>The range scale is marked from 10 to 150 with subdivisions. I believe those are decameters so the range of the unit is from 100 meters (in 10 meter increments at the low end with the last two markings before the infinity sign being 130 and 150 (for 1300 meters and 1500 meters with 100 meter hash marks. At 1000 meters one can interpolate the scale to maybe 5 meters. </p><p></p><p>Don't be too quick to take it apart. Some simple tests should demonstrate what's wrong, if anything. </p><p></p><p>I'll re-familiarize myself with the unit tomorrow and post some more info. Maybe I can take a photo of what should be seen through the eyepiece. </p><p></p><p>Here are some pictures of an A-40-p (not mine) so others here will know what we're talking about.</p><p><a href="http://www.worthpoint.com/worthopedia/beautiful-swedish-military-range-finder-nife-optics" target="_blank">Beautiful Swedish military range finder,NIFE OPTICS,as</a></p></blockquote><p></p>
[QUOTE="LouBoyd, post: 634160, member: 9253"] I'm somewhat familiar with the unit. I'll describe how mine works. It's a coincidence rangefinder and designed to double as a field periscope. To use it, it should stand vertically. The eyepiece is near the bottom. The top objective lens provides the right hand half (your right looking though it)of the image which has two horizontal lines superimposed on it.. The Objective lens approximately in the middle of the unit provides the left half of the image. On the far left side of the field of view is a graduated scale to display the range. The little window just above the lower objective lens provides light for that scale. At One end of the travel of the range knob (to the right above the eyepiece the scale will display an infinity mark (sidways 8). So if you stand it up and look though it you should see one coninuous non inverted and non reversed image in the eyepiece. if the range setting is not correct for the image (at the distance of an object which has a horzontal component in >both< sides of the image) that edge will appear to be offset. When the range knob is correctly adjusted the halves of image will be coincident. Of course other objects in the field at different distances will still appear to be split. The range scale is marked from 10 to 150 with subdivisions. I believe those are decameters so the range of the unit is from 100 meters (in 10 meter increments at the low end with the last two markings before the infinity sign being 130 and 150 (for 1300 meters and 1500 meters with 100 meter hash marks. At 1000 meters one can interpolate the scale to maybe 5 meters. Don't be too quick to take it apart. Some simple tests should demonstrate what's wrong, if anything. I'll re-familiarize myself with the unit tomorrow and post some more info. Maybe I can take a photo of what should be seen through the eyepiece. Here are some pictures of an A-40-p (not mine) so others here will know what we're talking about. [url=http://www.worthpoint.com/worthopedia/beautiful-swedish-military-range-finder-nife-optics]Beautiful Swedish military range finder,NIFE OPTICS,as[/url] [/QUOTE]
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NIFE 40cm rangefinder
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