Bushnell Rangemaster 7×35

Specifications:

Objective diameter:  35 mm
Magnification:  7 x
Exit pupil: 5 mm
Eye relief (acc. to spec): 14 mm
Usable eye relief (measured from rim of – unfoldable – eyecup): 7.5 mm
IPD:  53 – 75 mm
RFOV:  10.0  degrees = 175 m
AFOV (measured, rounded): 69 degrees
Minimum focus distance (measured): 5.0 m
Focus type: CF (direction of rotation from close to infinity: < anticlockwise)
Degrees of rotation of focus wheel from 5 m to infinity (measured): 180 degrees
Range of diopter adjustment (measured): +/- 4 dpt*
Excess travel of focus wheel beyond infinity position (estimate): 5 dpt*
Focus type:  CF
Prism system:  Porro I
Waterproof: no
Weight (measured, with eyepiece cover and strap): 957 g
Made in: Japan
*range of diopter adjustment not affected by position of focus wheel

Remarks:

There was a time when Bushnell sold fine, high quality binoculars made in Japan, such as this Rangemaster from 1955. With its very wide 10 degree (=175m) field of view, well corrected optics and solid mechanics, these vintage instruments are today much sought-after by binocular enthusiasts. Today, sixty years later, Bushnell stills sells binoculars in the low to medium price range, with production outsourced to China (such as the 6×30 or 8×42 models in this collection, see separate posts
Bushnell Natureview 6×30, https://binocular.ch/bushnell-natureview-6×30/
Bushnell Forge 8×42, https://binocular.ch/bushnell-forge-8×42/.

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