Rutland SPORT CR0821 User manual

BINOCULARS
USER INSTRUCTIONS
Compa t (Roof Type)
CR0821 RTL-318-1120K
CR1025 RTL-318-1230K
Traditional (Porro Type)
TP0845 RTL-318-1020K
TP1050 RTL-318-1010K
Rutland binoculars are designed to provide a sufficient field of view even for
spectacle wearers. Simply fold back the rubber eye cup so as to place the eye
at the correct distance from the lens whilst still wearing your spectacles. he
field of view might otherwise be partially shaded.
(Traditional binocular only)
o attach the neck strap provided to the binoculars, put the tip of the strap
into the neck strap eyelet (a). Bring the tip back through the neck strap buckle
(b). Use the neck strap holders to retain any remaining length (c).
(Traditional binocular only)
o support your traditional binoculars over long periods, an optional tripod
adaptor may be used (Adaptor sold separately). Attach the adaptor to the
tripod (a). Unscrew the cover on the front of the binoculars anticlockwise (b).
Connect the binoculars to the tripod by using the screw on the adaptor (c).
Eye cup
extended
a) b) c)
a) b) c)
Eye cup
folded
High grade optical glass for lenses and prisms
Ensuring maximum light transmission, with bright clear
images reducing eye fatigue in low light conditions.
Smooth operation
Precision mechanical operation provides reliable functionality.
Field
of view
Angle
of view
1000m
lTh first numb r (8x 40)
his number indicates the magnification. For 8x 40 binoculars, the
image will appear eight times closer than you would see it with the
naked eye.
lTh s cond numb r (8x 40)
his number represents the diameter (mm) of the objective lens which is
the lens nearer to the object. his effects the amount of light entering
the binocular and the image brightness.
lRoof (Dach) Prism
Using Dach (German for roof, because of their shape) prisms, these
binoculars offer a slim shape with a straight lens tube.
lPorro Prism
his is the most widely used design for binoculars. he objective lenses
are offset from the eyepieces.
lInt rpupillary distanc
he distance between your eyes which varies from person to person.
lAngl of vi w
he width of an area you can see at a given
distance. he size of the field
of view will decrease as
magnification increases.
lFi ld of vi w
he width of the
field seen with binoculars.
Binoculars with a wide field of
view make it easier to scan large areas.
lExit pupil
Bright circle seen on the surface of the ocular lens when the binoculars
are held 30cm away from the eye. his is the beam of light that passes
through the binocular into your eyes. Calculation is made by dividing the
objective lens by the magnification.
lBrightn ss ind x
A single figure number which has become the accepted method of
comparing the brightness delivered by the binoculars. Calculated by
squaring the exit pupil diameter. Does not indicate actual image
brightness but is used for making comparisons.
lTwilight factor
An indication as to how well binoculars will perform in poor light. he
higher the number, the better you can still discern fine details in twilight.
It is achieved by multiplying the objective lens diameter with the
magnification and calculating the square root of the result.
lClos st focusing distanc
he closest an object can be to the user and still remain in focus.
lEy r li f
he distance from the ocular lens to the point where the users eye can
see the full image. For spectacle wearers Rutland Sport binoculars have
fold down eye cups.
GlossarySpe ta le Wearers
Strap Atta hment
Tripod Use
Product pecification outlined in thi leaflet are ubject to
change without prior notice.
Plea e retain thi information
for future reference.
FOLD FOLD
FOLD FOLD
SPORT
™
RUTLAND PRODUCTS
Th Forg , Wigston, L ic st r,
England, LE18 2FS.
www.rutlandtools.co.uk
© RU LAND PRODUC S 02/13
SPORT
™

Spe ifi ations
Fold down
eye cup
Neck trap
holder
Objective
len
Ocular
len
Dioptre adju tment
ring with index
Axle pivot
Central
focu ing
wheel
Central
focu ing
wheel
Objective
len
Tripod holding
thread
Pupil di tance
Compa t
Pupil
di tance
cale
lDo not attempt to unscrew any part of the binoculars which holds the
lenses in place.
lUse the lens covers and/or case provided to protect the lens when the
binoculars are not in use.
lDo not apply excessive force to moving parts.
lake care not to drop the binoculars or subject them to strong vibration,
impact or pressure.
How To Use
COMPAC RADI IONAL
Order Code RTL-318 -1120K -1230K -1020K -1010K
Model Number CR0821 CR1025 P0840 P1050
Prism ype Roof Roof Porro Porro
Magnification 8x 10x 8x 10x
Objective Lens (mm) 21 25 40 50
Angle of View 7°5.9°8.2°6.5°
Field of View at 1000m 131 96 143 119
Exit Pupil Ø (mm) 2.6 2.5 55
Brightness Index 6.8 6.3 25 25
wilight Factor 13 16 18 23
Focusing Method Manual
Closest Focusing Distance (m) 2 2.3 69
Dimensions WxHxD (mm) 63x91x39 73x117x43 177x143x65 185x168x65
Weight (gm) 170 270 710 830
Accessories Included Case, neck strap and Lens caps, case, neck
cleaning cloth strap and cleaning cloth.
Applications ravelling, Camping/Hiking,
Outdoor spectator sports, Outdoor spectator sports,
heatre. Nature viewing.
Plea e ee rever e of heet for a glo ary of term u ed.
lPupil distanc
he purpose of this adjustment is to align the exit pupils of the binocular
with the pupils of your eyes. If they are not correctly aligned, you will
experience discomfort from having to use only one eye. Whilst looking at a
distant object, carefully move the binocular tubes downward or upward so
that both fields are correctly aligned, forming a perfect circle.
Not adju ted Correct view Pupil di tance cale available
on traditional type only
lDioptr adjustm nt
a) Look through the left eyepiece with your right eye closed or right
eyepiece covered. urn the central focusing wheel until the image is in
focus.
b) Open your right eye and close your left eye. urn the dioptre
adjustment ring to make the image in focus.
Remember to note the setting of the dioptre ring for later use as
indicated by the dioptre index.
lUsing th binoculars
a) o focus on objects at different distances, you will now only need to
use the central focusing wheel.
Traditional
Dioptre adju tment
ring with
index
Neck trap
eyelet
Neck trap
eyelet
Pupil di tance
lNever attempt to clean your binoculars internally or take them apart.
lUse the lens cloth provided or a lint free cloth to clean the lenses.
lA lens cleaning solution may be added to the cleaning cloth to assist in the
removal of smudges and dirt from the lenses. Never use solvents such as
paint thinner, alcohol or benzine to clean the binoculars.
lStore your binoculars in a well ventilated, moisture free area.
Ocular
len
Fold down
eye cup
Care & Maintenan e
Features
lDo not vi w th sun with this product or th nak d y Viewing the sun can cause permanent damage to the retina and loss of eyesight.
lDo not l av binoculars in dir ct sunlight Magnified sunlight can cause a fire.
lDo not look through binoculars whilst walking You could walk into someone or something or fall and hurt yourself.
lDo not swing th binoculars by th n ck strap his could cause an injury to yourself or others.
Warning
Compact
dioptre
mea urement
Traditional
dioptre
mea urement
FOLD
FOLD FOLD
FOLD