Introduction: Make a Simple Paper Slide Rule

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How to make a simple paper slide rule.

Step 1: Download and Print

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You need to download the PDF image of the slide rule from or from link below.  Print the page on paper as thick as your printer can handle.

Step 2: Everything Else You Need

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You will also need:
Piece of thin clear plastic 1 by 5 inches

Step 3: Cut Out the Parts

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Carefully cut along the solid lines to make the body and slide.

Step 4: The Body and Slide

Picture of The Body and Slide

Step 5: Fold the Body Parts

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Fold back along dotted lines to form top and bottom scales.

Step 6: Insert the Slide

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Insert the slide. You might need to slightly trim the slide or adjust the folds so that the slide is free to move back and forth.

Step 7: Draw the Cursor

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Draw a fine line down the center of the clear plastic.

Step 8: Fold the Plastic

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Fold the plastic up about 1 inch from the end. Fold towards the side with the line.

Step 9: Fold Plastic Around Body and Tape

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Fold the plastic around the body and tape in back. It should be free enough to slide back and forth also.

Step 10: Finished

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Your slide rule is ready to use. In the photo the C and D scales are set to multiply 25 times 2.


HackShack (author)2016-11-10

I made mine out of butter board so it would last longer

it still works!!!!!

fibonacci112 (author)2016-04-16

This is just what I was looking for. I teach 4th grade math and some of my students are struggling with multipication and division. I was hoping to find a simple slide rule I could print out and this will fit the bill nicely. I suspect all my students will want to have their own. I have a feeling something old is about to become very cool again.

mr.incredible (author)2014-04-01

This would be a great way for schools to teach the lost art of math in your head. The students could even assemble it them selves.

rimar2000 (author)2014-03-31

Thanks, this is very useful.

apburner (author)2014-03-30

Great work. I would prolly make one if I didn't still have my original engineering slide rule in it's carrying case. Is that not sad. LOL

About This Instructable




Bio: Engineer, Author, and Amateur Scientist
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