ENGLISH I 3
The interpupillary distance, or the distance
between the pupils, varies from person to
person. The binocular must be correctly
aligned (adjusted) to the distance between
your pupils to achieve a single, clear image.
To adjust this distance, lift the binocular up
to your eyes (using both hands) and look
through them at an object in the distance.
Move the two barrels (halves) of the binocular
closer together or further apart until you see
a single, clear image (Fig. 2). Check that the
interpupillary distance is set correctly every
time you use your binocular.
adjuStING tHE INtErpupILLary dIStaNcE
Fig 2
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