US Optics ER-25MIL 5-25X

US Optics


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  • Magnification 5-25X
  • Exit Pupil Diameter 2.7 mm
  • Diopter +2 to -3
  • Parallax Adjustment 75 yds to ∞
  • Field of View @ 5X 16.6' @ 100 yards
  • Field of View @ 25X 5.3' @ 100 yards
  • Eye Relief 3.5" / 8.9 cm
  • Elevation Knob 1/10 MIL EREK
  • Elevation Adjustment Range 110 Clicks per Revolution
  • Windage Knob US#3, 1/10 MIL
  • Windage Adjustment Range 105 Clicks per Revolution
  • Objective Lens Housing Diameter 2.65” / 66mm
  • Tube Diameter 1.34" / 34mm
  • Tube Length 6.6" / 168mm
  • Overall Length 18" / 45.7 cm
  • Objective Lens Diameter 2.28" / 58mm
  • Ocular Lens Diameter 1.26" / 32mm
  • Weight 2.5 lbs / 1.13 kg
  • Reticle, First Focal Plane
  • Reticle Illumination Red
  • Battery Lithium Coin, CR2032
  • Battery Runtime Up To 10,000 Hours
  • Material Aluminum, 6061-T6
  • Finish Color Matte Black
  • Finish Type Type III Hard Anodized

12-position Illuminated Reticle System (IRS) paired with a MIL scale reticle
option optimized for target engagement at long-range distances and when
engaging targets at extreme-range in low light conditions.
Proprietary thin film coatings fused to precision-ground and polished lenses
project sharp image resolution at over 85% light transmission beginning from
the objective lens through the eyepiece to ensure a crystal clear sight picture
even in low light conditions.
Adjustable eyepiece with a range of +2 to -3 diopter ensures a sharp and
distinct reticle image.
32mm eyepiece and a 58mm objective at 5X magnification yield a 2.7mm exit
pupil for rapid deployment of the IRS over a target.
At 5X magnification the field of view at 100 yards spans 16.6 feet for maximum
situational awareness through the sight picture.
At 25X magnification the field of view at 100 yards spans 5.3 feet for maximum
situational awareness through the sight picture.
Low-profile Erector Repositioning Elevation Knob (EREK) is easily manipulated
in any environmental condition including cold and inclement weather, with or
without gloves.
EREK incorporates a center screw for rough zeroing allowing maximum upward
travel of 110 distinct, positive clicks per revolution in 1/10 MIL increments
when adjusting the ER-25MIL elevation with the EREK.
Turret Parallax Adjustment Locater (TPAL) knob corrects perceived image
shift, or parallax, at distances as near as 75 yards to infinity.
US#3 windage knob with 105 distinct, positive clicks per revolution facilitates
adjustment in 1/10 MIL increments.

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