Founder Optics BOS72 User manual

P.1
Feature
-Comfortable Binocular type viewing for long time use for high power.
-Premium optics design of the patented built-in binoviewer.
-ED Lens Ohara S-FPL-53, almost zero aberration and distortion to bring the sharp image.
-Unique linear slides (IPD) interpupillary distance from 58-74mm.
-Durable protect carrying case
-Exchangeable eyepieces to provide different magnification.
Specification
Model No
BOS72
BOS80
Aperture
72mm
80mm
Focal Length of Objective Lens
432mm
500mm
Focal Ratio
f/6.0
f/6.25
Diagonal
Patented built-in binoviewer
Lens Coating
ED Lens, fully multi-coating
Field of View
2.3°
2.0 °
Field of View at 1000 yds
119 ft
103 ft
Near Focus
18.9 ft / 5.75M
32.8 ft / 10 M
Tripod Socket
Standard 1/4”-20 UNC
Dimension(L x W x H)
332 x 107 x 249mm
371 x 107 x 249 mm
Standard Eyepieces
ALIEN Eyepiece-Focal length 12.5mm eyepieces*2pcs
20mm long eye-relief, 1.25” barrels
Magnification (with FL:12.5mm
eyepieces)
35x
40x
Bino One Scope
Product Manual
Model No: BOS72/ BOS80

P.2
What is in the Box
1. Strong Blow Molding Box ( Carrying case)
2. Bino One Scope
3. 12.5mm ALIEN Eyepieces (Long eye-relief
20mm)*2pcs
4. Tripod Socket
5. Vixen Type Dovetail Plate
6. Product Manual
7. Product Card
( Take out other eyepieces foam, you could put
more eyepieces in the case)
Usage
Name of Parts
A. Tripod Socket
B. Objective Cap
C. 1.25’’ Eyepiece Holder
Cap
D. Left Eyepiece Holder
E. Right Eyepiece Holder
F. Eyepiece Twist Lock
G. Focus Ring
H. Diopter Focusing Ring
I. IPD Scale (58-74mm)
J. IPD Adjustment Casings
Bino One Scope

P.3
Installation
Mounting
the Bino One
Scope
1. Set up your tripod and take out the scope from the
storage box. Mount your scope to tripod by screwing
standard 1/4” connection knob on mounting platform
of tripod into ⒶTripod socket until it is securely
attached. You can also use Vixen type dovetail plate
which we includes in the combo set.
Installing
eyepiece
2. Rotate two ⒻEyepiece twist locks in counter
clockwise direction, then remove Ⓒ1.25" eyepiece
holder caps and ⒷObjective cap from the scope.
Insert two 12.5mm ALIEN eyepieces on both left and
right sides. Rotate ⒻEyepiece twist locks clockwise to
fix the eyepiece.
ALIEN is a 12.5mm eyepiece with 20mm long eye-
relief, 55∘FOV.
If you have different FL eyepiece, please always make
sure they have the same focal length.
Focusing
3. Adjust the left side eyepiece first:
Close your right eye and look at the left side eyepiece
with left eye to adjust ⒼFocus ring until the image is
clear.
Adjust the right side eyepiece:
Close your left eye and look at the right side eyepiece
with right eye to see if it’s also clear. If not, you may
adjust ⒽDiopter focusing ring, which marked +◄►-
scales until the right image becomes to clear and
sharp.
Linear slides
Interpupillary
distance
adjustment
From 58-
74mm
4. Through the unique linear system, hold both sides of
ⒿIPD adjustment casings to move inward and
outward to get the best interpupillary distance (IPD)
between your eyes until two images merge into one.
Remember the ⒾIPD scale (58~74mm) would be
helpful for quick set up next time.
Now, you are done! Enjoy the Bino One Scope now.
Magnification Calculation
To calculate power, divide the focal length of the eyepiece into the focal length of the objective lens.
Example: The model with aperture 80mm has an objective lens focal length of 500mm; when the bino spotting
scope is with 2pcs the same focal length 12.5mm eyepieces, a power of 500mm / 12.5mm = 40 power (written as
"40X") results.
Vixen Type
dovetail
plate
Bino One Scope
Ⓘ
Ⓕ
Ⓖ
Ⓐ
Screw (1/4’’
-20x3/8L)

P.4
Storage and Cleaning
Please avoid to storage in a humid environment. This is recommended always keep Bino One
Scope in the carry case to protect the products.
Careless handling of cleaning on the lens surface may damage the multi-coated treatment. Do
not use inappropriate fluid or tissue to clean the lens.
Please remove as much dust and dirt as possible from the lens with a blower or soft-bristled
brush. Use lens cleaning tissue and fluid that designed for multicoated lenses. Wipe in
concentric circles and work from the centre out with circular motion.
www.founderoptics.com
E mail: [e-mail]
Bino One Scope
CAUTION！
1. Never look at the sun through your scope directly. Doing so can cause permanent damage to your eyes, including blindness.
2. Always be sure your scope is properly held, secured, or stored.
Made in Taiwan
V.1

P.5