Inside Rearview Mirror; Outside Rearview Mirror - Chevrolet 1979 Light Duty Truck Owner's Manual

INSIDE REARVIEW MIRROR

The mirror can be adjusted up, down, or sideways to obtain the best
view to the front and rear. Move the mirror lever to the night position
to reduce glare from headlights of vehicles behind you.

OUTSIDE REARVIEW MIRROR

Adjust the outside mirror you can just see the side of your vehicle
so
in the side of the mirror closest to the vehicle. This helps you determine
your relation to objects see n in the mirnx.
CONVEX MIRROR
Your vehicle may have an optional convex outside rearview mirror.
(A convex mirror has a curved surface.) Adjust the convex mirror
so
you can just see the side of your vehicle in the portion of the mirror
closest to the vehicle. This type of mirror is designed to give a much
wider view to the r ear, and especially of the lane next to your vehicle.
However, cars and other objects seen in a convex mirror will look
smaller and farther away than those seen in a flat mirror. Therefore,
use care when judging the size or distance of a car or object seen in
this convex mirror. Use your inside mirror to determine the size and
distance of objects seen in the convex mirror.
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