Make a Simple Paper Slide Rule

How to make a simple paper slide rule.
 

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

You will also need:
Piece of thin clear plastic 1 by 5 inches
Ruler
Scissors
Pen
Tape

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

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

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.

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

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

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

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