Federal Instrument - Ideal Rangefinder Product booklet

It's Easy to use the 1
IDEAL RANGE-FINDER «

I. Hold Range-finder level, with fingers away
from rear lenses, and look at subject through

the square eyepi

we 63

3. Turn dial until
double images
come together.

2. Locate subject in
white circle. Image
will appear double.

The correct focussing distance is then read on
the scale opposite the white pointer. It is easiest
to focus on a vertical line in the subject.

3-YEAR SERVICE GUARANTEE

The IDEAL Range-finder is very durably built
and will give excellent service for many years
if used with the care due an optical instrument,
If the range-finder is dropped or banged, the
scale may shift slightly. This may be corrected
by turning the set-screw on the dial, or the
range-finder may be returned to the FACTORY
with 50c to cover postage and handling, for
resetting and recalibration, Address package to:

FEDERAL INSTRUMENT CORP.
14.02 Broadway, L. I. City 6, New York