Seiko Rotary Slide Rule Manual - Page 18
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3-3. Calculation of climbing altitude, climbing rate, and climbing time A. Calculation of climbing altitude [Problem] Climbing rate : Climbing time : Altitude to reach : 430 FT/minute 18.6 minutes ? [Solution] (1) Bring 43 on the bezel ruler and 10 on the dial ruler in line. (2) Find the value on the bezel ruler scale corresponding to 18.6 on the dial ruler scale. The number is 80. (3) For the purpose of determining the correct number of digits, the same rule as for division (2-1(B)) applies. Thus, the answer is 8000. [Answer] 8000 FT 18
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3-3.
Calculation
of
climbing
altitude,
climbing
rate,
and
climbing
time
A.
Calculation
of
climbing
altitude
[Problem]
Climbing
rate
:
430
FT/minute
Climbing
time
:
18.6
minutes
Altitude
to
reach
:
?
[Solution]
(1)
Bring
43
on
the
bezel
ruler
and
10
on
the dial
ruler
in
line.
(2)
Find
the
value
on
the
bezel
ruler
scale
corresponding
to
18.6
on
the
dial
ruler
scale.
The
number
is
80.
(3)
For
the
purpose
of
determining
the
correct
number
of
digits,
the
same
rule
as
for
division
(2-1(B))
applies.
Thus,
the
answer
is
8000.
[Answer]
8000
FT
18