Tasco OffShore 21, Instruction Manual, Page: 4 / 52

4
I. Basic Binocular Adjustments
A. IPD Adjustment
Set the interpupillary distance by grasping the body and bending it until you can see a single circular
image. The setting for your eyes will be indicated on the IPD scale. Note this scale setting for quicker
resetting later.
B. Focusing
1. Close your left eye, rotate the right eyepiece until the object appears sharp and clear.
2. Open your left eye, close right eye. Rotate left eyepiece until the object appears sharp and clear.
3. To focus on other objects, repeat Steps 1 and 2.
4. If you share your binocular with another person, note the diopter index mark settings at the base
of the eyepieces fi rst. Then you can simply return the eyepieces to those settings when you next use
the binocular to view an object at the same distance.
C. Rubber Fold-Down Eyecups
These convenient eyecups fold down for use with eyeglasses and fold up for use without eyeglasses.
They provide comfort and promote viewing ease. They will not scratch your glasses.
IPD Scale
(on hinge cap)
Diopter
Index
Marks
(both sides)