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Pickett 400 Business Slide Rules
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How to Use Pickett 400 Business Slide Rules
This manual came with a Pickett N400-ES slide rule and is
in fairly good shape after being folded for 30+ years. The manual has instructions for a range of basic functions as well
as for the specialist markup and business ratios.
- Author: Dr E Justin Hills
- Copyright Date: Not listed but all illustrations are of pre 1950 type rules.
- Pages: 22
- Condition: Good, crease in middle from being folded.
This manual is available for download.
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Contents
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There are three sections in this manual:
General Information:
| 1 |
Who should use the rule? |
| 2 |
What kinds of problems can be solved? |
| 3 |
What mathematical background is needed? |
Part 1 - Markup:
| 1 |
Introduction |
| 2 |
The slide rule itself |
| 3 |
How to read the scales |
| 4 |
Approximate numbers and answers |
| 5 |
Proportion |
| 6 |
Using the C, D, CF and DF scales |
| 7 |
Location of the decimal point in answer |
| 8 |
Six types of markup problems |
| 9 |
Series discounts |
Part 2 - Use of the scales on back of the rule:
| 1 |
Multiplication |
| 2 |
Division |
| 3 |
Continued Products |
| 4 |
Combined multiplication and division |
| 5 |
Proportion |
| 6 |
The CI scale |
| 7 |
Square roots and squares |
| 8 |
Cube roots and cubes |
| 9 |
Logarithms |
| 10 |
Business Ratios |
| 11 |
Per Cents |
| 12 |
Initial Markup Analysis |
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