Celestron Cavalry 15X70 Spécifications télécharger pdf (Page 11)

ENGLISH I 9

The Calculator Dial located on the left objective

barrel can be used to determine distance quickly

and easily without using the formulas above. The

calculator is composed of a triangular indicator

marked “Angle”, a rotating ring and three number

scales. The ﬁrst two scales are on the rotating

ring; the ﬁrst scale is the “Angle” measured in

MILS and the second scale is the “Object Size”.

The third scale below the rotating ring is the

“Distance” reading. To use the calculator, look

through the binoculars and measure the height

of an object using the reticle. Using the same

example above, a man is seen that measures

20mils tall. Using the rotating ring, align the

triangular indicator to the number 2 (20mils) on

the Angle scale. Estimating that the man is 6

feet tall (2 yards), locate the number 2 on the

“Object Size” scale. Each number on the “Object

Size” scale will correspond to a number on the

ﬁxed distance scale. In this example the 2 on the

distance scale is lined up with 100, so the man

measured in the binocular is 100 yards away.

For example:

You range a 6-foot tall man (2 yards) that is

20mils tall and you want to know the distance

to him.

using the calculator dial (Model 71422 only)

Target Size (Inches) x 27.8

Measured Mils

= Range (Yards)

2 (Yards) x 1000

20Mils

= 100 Yards

Target Size (Meters) x 1000

Measured Mils

= Range (Meters)

1 2 ... 6 7 8 9 10 11 12 13 14 15 16 ... 103 104

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