Focusing Instructions; Estimating Distances - Spectrum Technologies Macroscope 45 Product Manual

Focusing Instructions

The assembled MACROSCOPE 45 has two knurled focus
adjustment knobs—one located at the top (eyepiece) and the
other located on the close-up attachment.
procedure is as follows:
1. Adjust the eyepiece focus know (Top of Macroscope) until
the reticle is as sharp as possible disregarding the image of
the object.
2. After the reticle is sharp adjust the close-up focus knob
(Bottom of Macroscope) until the image of the object is
sharp.
To estimate the distance of an object it is necessary to know its
approximate size. The procedure is simple using either of the
following formula:
Distance
(meters) =
Distance (feet)
=
For instance—a person is the distance approximately 6 feet tall
(2 meters) provides a scale reading of 2.5 sixteenths (4 mm).
The calculations are as follows:
0(Meters)
Answer = 40 meters
0(feet)
Answer = 192 feet

Estimating Distances

Metric:
Size of object (M) / scale
reading (mm)
English units:
Size of object (ft) / scale
reading (sixteenth)
Metric:
2(Meters) / 4(mm)
English:
6 (ft) / 2.5 (sixteenth)
The focusing
X 80
X 80
X 80
X 80
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