Seiko Rotary Slide Rule Manual
Seiko Rotary Slide Rule Manual
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- Seiko Rotary Slide Rule | Manual - Page 1
ROTARY SLIDE RULE MANUAL INSTRUCTIONS INSTRUCTIONS INSTRUCCIONES BEDIENUNGSANLEITUNG ISTRUZIONI INSTRUOES 5Vg1311 (P. 3) (P. 32) (P. 62) (S. 91) (P. 120) (P. 150) (180 - Seiko Rotary Slide Rule | Manual - Page 2
You are now the proud owner of a Rotary Slide Rule. For best results, please read the instructions in this booklet carefully before using your Rotary Slide Rule. Please keep this manual handy for ready reference. Vous void l'heureux proprietaire d'une Regle a Calcul Rotative. Pour en obtenir de - Seiko Rotary Slide Rule | Manual - Page 3
CONTENTS 1. SCALES EXTERNAL VIEW OF ROTARY SLIDE RULE HINT FOR CALCULATION OF THE NUMBER OF DIGITS 2. ORDINARY COMPUTATION 3. COMPUTATION FOR NAVIGATION 4. METHOD OF CONVERSION DESCRIPTION OF MARKINGS ON THE ROTARY SLIDE RULE Page 4 5 7 8 12 21 22 3 - Seiko Rotary Slide Rule | Manual - Page 4
ROTARY SLIDE RULE MANUAL _C This watch is fitted with a rotary type slide rule for rapid calculations and conversion of C-d) various essential flight data required by pilots. LLI With this rotary slide rule, a wide variety of computations are possible, including ordinary multiplication, division, - Seiko Rotary Slide Rule | Manual - Page 5
EXTERNAL VIEW OF ROTARY SLIDE RULE [Type II Bezel ruler (rotating) Time index (reference point for tim • conversion) Dial ruler (fixed) 0.ktkoz 7' 7 Conversion scale 0 Logarithmic scale on dial ruler Time scale rn 7 CTO EA. Utility bearing compass scale Logarithmic scale on bezel ruler 5 - Seiko Rotary Slide Rule | Manual - Page 6
[Type II] Bezel ruler (fixed) Dial ruler (rotating) Conversion scale Logarithmic scale on dial ruler 6 Time index (reference point for time conversion) a. f 4, Time scale ogarithmic scale on bezel ruler rown - Seiko Rotary Slide Rule | Manual - Page 7
Hint for calculation of the number of digits rn Any value on the logarithmic scale is relative, for example, "90" assumes any values that are the n-th power of 10, multiplied by itself (9, 900, 9,000 ...). The calculation method to determine the correct number of digits (exponents) is as follows: - Seiko Rotary Slide Rule | Manual - Page 8
2. ORDINARY COMPUTATION 2-1. Multiplication, division and the rule-of-three calculation 7:7.0 A. Multiplication [Problem] 30 x 40 = ? [Solution] (1) Bring 30 on the bezel ruler and 10 on the dial ruler in line. (2) Read the number on the bezel ruler scale corresponding to 40 on the dial ruler - Seiko Rotary Slide Rule | Manual - Page 9
B. Division [Problem] 120 . 40 = ? [Solution] (1) Bring 12 on the bezel ruler and 40 on the dial ruler in line. (2) Read the number on the bezel ruler scale corresponding to 10 on the dial ruler scale. The number is 30 (= 3 x 10'). (3) Calculate the number of digits following the formula in "Hint - Seiko Rotary Slide Rule | Manual - Page 10
C. Rule-of-three calculation ._.c [Problem] 30/10 = ?/40 LcJ..i [Solution] (1) Bring 30 on the bezel ruler and10 on the dial ruler in line. (2) Read the number on the bezel ruler scale corresponding to 40 on the dial ruler scale. The number is 12 (= 1.2 x 10'). (3) Calculate the number of digits - Seiko Rotary Slide Rule | Manual - Page 11
2-2. Calculation of square root [Problem] Square root of 576 = ? crct CA' [Solution] Locate 57.6 on the dial ruler scale, and 10 on the bezel ruler scale. Find the position where the value opposite 10 on the bezel ruler scale is the same as the value opposite 57.6 on the dial ruler scale. [ - Seiko Rotary Slide Rule | Manual - Page 12
Time calculation [Problem] Ground speed : Distance to fly : Time to fly 200 MPH 100 miles [Solution] (1) Bring 20 on the bezel ruler and the to 10 on the bezel ruler scale. The number is 30. (3) For the purpose of determining the correct number of digits, the same rule as for division (2-1(B)) - Seiko Rotary Slide Rule | Manual - Page 13
bezel ruler scale corresponding to the time index (60 MPH) on the dial ruler scale is 20. (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 200. [Answer] 200 MPH C. Distance calculation [Problem] Ground - Seiko Rotary Slide Rule | Manual - Page 14
(60 MPH) on the dial ruler in line. (2) The value on the bezel ruler scale that corresponds to 30 on the dial ruler scale is L1J 10. (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 100. [Answer] 100 miles - Seiko Rotary Slide Rule | Manual - Page 15
required, and remaining cruising time rOnQ 0Q A. Calculation of fuel consumption rate (per hour) [Problem] Time to fly Fuel consumption Fuel consumption rate 300 minutes (5 hours) 175 gallons [Solution] (1) Bring 17.5 on the bezel ruler and 30 (5:00) on the dial ruler in line. (2) The - Seiko Rotary Slide Rule | Manual - Page 16
rule as for division (2-1(B)) applies. Thus, the correct value is 175. [Answer] 175 gallons C. Calculation of the time remaining for cruising [Problem ] Time available for cruising Fuel innage Fuel consumption rate 175 gallons 35 gallons/hour [Solution] (1) Bring 35 on the bezel ruler - Seiko Rotary Slide Rule | Manual - Page 17
(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 300. rn cro (Answer) 300 minutes (5 hours) The following formula applies to all the calculation above. FUEL - Seiko Rotary Slide Rule | Manual - Page 18
[Problem] Climbing rate : Climbing time : Altitude to reach : 430 FT/minute 18.6 minutes ? [Solution] (1) Bring 43 on the bezel ruler 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 - Seiko Rotary Slide Rule | Manual - Page 19
bezel ruler scale corresponding to 10 on the dial ruler scale. The number is 43. (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 430. [Answer] 430 FT/minute C. Calculation of climbing time [Problem] - Seiko Rotary Slide Rule | Manual - Page 20
[Solution] _c (1) Bring 43 on the bezel ruler and 10 on the dial ruler in line. (2) Find the value on the dial ruler scale corresponding to 80 on the bezel ruler scale. The number is 18.6. [Answer] 18.6 minutes A - (2) B (1 C - (2) C C A-(1) B - (2) C - (1) 20 - Seiko Rotary Slide Rule | Manual - Page 21
quantity, weight and various other quantities 00 used in navigational computation from one system of units to another is important. 7,• SEIKO Rotary Slide Rule is equipped with convenient conversion scales to facilitate this job. The following are typical examples of conversions often required by - Seiko Rotary Slide Rule | Manual - Page 22
DESCRIPTION OF MARKINGS ON THE ROTARY SLIDE RULE _c cc Classification Marking Explanation LLI Distance NAUT Abbreviation of nautical mile 1 NAUT = 1.852 km STAT Abbreviation of statute mile 1 STAT. 1.609 km KM Abbreviation - Seiko Rotary Slide Rule | Manual - Page 23
Classification Weight Speed Marking KG LBS FUEL LBS OIL LBS MPH Explanation Abbreviation of Kilogram 1 KG = 2.22 pounds Abbreviation of pounds 1 pound = 0.45 kg Abbreviation of fuel pounds 1 fuel pound = 0.167 US gallons = 0.139 Imperial gallons Abbreviation of oil pounds 1 oil pound =0.133 US - Seiko Rotary Slide Rule | Manual - Page 24
4-1. Conversion between nautical miles, statute miles and kilometers _c A. Nautical miles -> Statute miles/Kilometers [Problem] 35 nautical miles -> ? statute miles -> ? kilometers [Solution] (1) Bring the NAUT index on the bezel ruler and 35 on the dial ruler in line. (2) Find the value on the dial - Seiko Rotary Slide Rule | Manual - Page 25
The reading is 64.8. [Answer] 35 nautical miles 64.8 kilometers C. Kilometers -> Statute miles/Nautical miles [Problem] 64.8 kilometers ? statute miles -> ? nautical miles [Solution] (1) Bring the KM index of the bezel ruler and 64.8 on the dial ruler in line. (2) Find the value on the dial ruler - Seiko Rotary Slide Rule | Manual - Page 26
, /20\ 4-2. Conversion between US gallons, Imperial gallons and liters A. US gallons -> Imperial gallons/Liters [Problem] 42 US gallons -> ? Imperial gallons --> ? Liters [Solution] (1) Bring the US GAL index of the bezel ruler and 42 on the dial ruler in line. (2) Find the value on the dial ruler - Seiko Rotary Slide Rule | Manual - Page 27
the rule for the division (2-1-(B)), the dial ruler scale value, 15.9, is interpreted as 159. [Answer] 35 Imperial gallons 0=.• 159 liters B. Imperial gallons -> US gallons/Liters [Problem] 35 Imperial gallons -> ? US gallons -> ? Liters [Solution] (1) Bring the IMP GAL index of the bezel ruler - Seiko Rotary Slide Rule | Manual - Page 28
Problem] 7.o 159 liters -> ? US gallons -> ? Imperial gallons [Solution] (1) Bring the LITERS index of the bezel ruler and 15.9 on the dial ruler in line. (2) Find the value on the dial ruler scale corresponding to the US GAL index of the bezel IMP GAL index of the bezel ruler scale. The reading - Seiko Rotary Slide Rule | Manual - Page 29
/Imperial gallons [Problem] 13.1 fuel pounds --> ? US gallons -4 ? Imperial gallons [Solution] (1) Bring the FUEL LBS index of the bezel ruler and 13 corresponding to the US GAL index of the bezel ruler scale. The reading is 21.8. (3) According to the rule for the division 12-1-(B)), the dial ruler - Seiko Rotary Slide Rule | Manual - Page 30
the dial ruler in line. (2) Find the value on the dial ruler scale corresponding to the US GAL index of the bezel ruler scale. The reading is 21.8. (3) According to the rule for the division 12-1-(B)), the dial ruler scale value, 21.8, is interpreted as 2.18. (4) Find the value on the dial - Seiko Rotary Slide Rule | Manual - Page 31
A - (1) B - (1) %BEP9: 0 XXV * 3.' LBS 1 'GA( 19 A - (4) B - (4) A - (2) B - (2) 31
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ROTARY
SLIDE
RULE
MANUAL
INSTRUCTIONS
(P.
3)
INSTRUCTIONS
(P.
32)
INSTRUCCIONES
(P.
62)
BEDIENUNGSANLEITUNG
(S.
91)
ISTRUZIONI
(P.
120)
INSTRUOES
(P.
150)
5V
g1311
(180