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The Basics, Starting Out
Suggestion for rangefinders
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<blockquote data-quote="LRNut" data-source="post: 2140095" data-attributes="member: 3230"><p>The beam divergence of the the BR2500 (replacement for the BR2) is .75x1.5 Mrads; hopefully the .75 is in the vertical direction. The beam divergence of the SIG is 1.4 Mrad, so the BR2500 might do a better job in flat country. The BR2 has a 2x4 Mrad divergence. All of these rangefinders use signal filtering technology, eg, return the first reading, etc.</p><p></p><p>The BR2 laser is a class 1 laser; the Sig uses a class 3. Class 3 lasers emit up to five times the energy levels of Cl 1 lasers.</p><p></p><p>FWIW, I just ranged a few things with the BR2 and SIG. The SIG won hands down. Measured a palm tree at 1083; BR2 came up blank. Measured a small object (heat pump maybe?) on roof with another house behind it; BR2 did not.</p><p></p><p>The Trijicon Ventus will use four lasers. If you think about it, four lasers will concentrate their energy at the center; it is designed to measure out to five kilos IIRC and measure wind speeds every 100 yards out to 500.</p></blockquote><p></p>
[QUOTE="LRNut, post: 2140095, member: 3230"] The beam divergence of the the BR2500 (replacement for the BR2) is .75x1.5 Mrads; hopefully the .75 is in the vertical direction. The beam divergence of the SIG is 1.4 Mrad, so the BR2500 might do a better job in flat country. The BR2 has a 2x4 Mrad divergence. All of these rangefinders use signal filtering technology, eg, return the first reading, etc. The BR2 laser is a class 1 laser; the Sig uses a class 3. Class 3 lasers emit up to five times the energy levels of Cl 1 lasers. FWIW, I just ranged a few things with the BR2 and SIG. The SIG won hands down. Measured a palm tree at 1083; BR2 came up blank. Measured a small object (heat pump maybe?) on roof with another house behind it; BR2 did not. The Trijicon Ventus will use four lasers. If you think about it, four lasers will concentrate their energy at the center; it is designed to measure out to five kilos IIRC and measure wind speeds every 100 yards out to 500. [/QUOTE]
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Suggestion for rangefinders
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