APM 20x100mm Magnesium Series Binocular

Code: APM-MS-20x100-non-ED


In stock (can be backordered)

In stock (can be backordered)


APM 20×100 MS Binocular (Nitrogen Filled)

The high quality APM MS binoculars designed specifically for outdoor use, the MS Binos series are fully nitrogen waterproof and can be used in the rain or left unprotected on a tripod during showers without the worry of water penetration.

In addition to waterproofing, the binoculars are protected with durable natural rubber covering.

Featuring a high specification for porro prism optical system, the clarity and field of view derived from the 16×80 makes it an excellent choice for astronomy, while the higher magnification 20×80 and 25×80 are geared more toward long range terrestial observation and specialist outdoor applications such as aircraft observation. All three models provide long eyerelief and deliver full field of view with or without spectacles.

Used either as hand held instruments or using a photo or video tripod especially for the higher magnifications.

Delivery contains:

  • Binocular
  • Carrying Case
  • Metal Tripod Adapters


Dew shield ID thread: M 103.5 x 1-6H,4 mm depth
Prism system: Porro Prism BAK 4
Focusing: Individual Eyepiece Focus
Color: Black
Surface material: Armored Rubber
Housing: Magnesium
Magnification: 20 x
Front lens diameter: 100 mm
Coating: Fully Multi-Coated
Exit pupil: 5 mm
Eye relief: 20 mm
Interpupillary distance: 56 mm – 74 mm
Diopter compensation: +/-10
Objective angle of view: 3.3°
Subjective angle of view: 66°
Field of view at 1000m (m): 58m
Twilight factor: 44.7
Photo tripod thread: Yes
Dimensions: Height x Width x Thickness (380 mm x 265 mm x 120 mm )
Weight: 3.8kg

Additional information

Weight 40 lbs
Dimensions 24 × 18 × 12 in


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