Seiko Rotary Slide Rule Manual

ROTARY

SLIDE

RULE

MANUAL

_C

—

Cd)

LLI

4

This

watch

is

fitted

with

a

rotary

type

slide

rule

for

rapid

calculations

and

conversion

of

various

essential

flight

data

required

by

pilots.

With

this

rotary

slide

rule,

a

wide

variety

of

computations

are

possible,

including

ordinary

multiplication,

division,

computation

of

flight

speed,

fuel

consumption,

and

unit

conversion.

'..;CALES

The

rotary

slide

rule

consists

of

(11

a

ruler

on

the

bezel

(bezel

ruler)

and

(2)

a

ruler

on

the

dial

(dial

ruler).

The

outer

circumference

of

the

bezel

ruler

is

graduated

at

an

interval

of

3

deg.

to

form

a

utility

bearing

compass

(Type

I

only),

and

the

inner

circumference

is

provided

with

a

logarithmic

scale

graduated

from

10

to

100.

The

outer

circumference

of

the dial

ruler

is

marked

with

the

same

logarithmic

scale

(10

—

100)

as

the

bezel

ruler,

and

the

inner

circumference

is

graduated

with

a

time

scale

(minute/hour

scale

...

80

min./1:20,

120

min./

2:00,

300

min.

/5:00,

etc.).

Depending

on

models,

two

types

of

rotary

slide

rules

are

available.

TI:pe

It

has

a

rotating

bezel

ruler

and

a

fixed

dial

ruler.

Turn

the

bezel

to

bring

the

value

on

the

bezel

ruler

in

line

with

a

desired

value

on

the

dial

ruler.

Tyne

II

It

has

a

rotating

dial

ruler

and

a

fixed

bezel

ruler.

Turn

the

crown

at

the

4

o'clock

position

to

bring

the

value

on

the dial

ruler

in

line

with

a

desired

value

on

the

bezel

ruler.

Seiko Rotary Slide Rule Manual - Page 4

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