Take a plain sheet of 8.5 x 11 copy paper and fold it in half lengthwise. Unfold the paper and use the ruler to draw a bold line along the fold. This line will serve as the axis for the scale.
Start 0.5 inches from the left end of the line and use the ruler to measure and place one-inch markings along the length of the line. The markings should end 0.5 inches from the edge of the paper. There should be a total of 11 markings.
Rotate the paper so that all labels are inserted in landscape orientation, and lightly label the markings from left to right with 0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, and 1.0. These labels are temporary and will be erased after they have served their purpose as guides.
Use the calculator to determine the base-10 logarithm of all the integers from 1 to 10 and record the results on a separate sheet of paper. For example, log (1) = 0 and log (2) = 0.301.
Label the first marking on the left with the number 1 above and below the line. This is the zero point of your logarithmic scale and equivalent to log (1) = 0.
Plot the logarithm of each successive integer up to 10 using the temporary labels on the scale as a guide. Mark the position on the scale with a bold tick and label the position with the integer above and below the line. For example, log (4) = 0.602. Find the position 0.602 on the scale and mark the position with a short, bold line that is perpendicular to the scale line. Label that point as 4 above and below the scale line.
Erase the temporary guide labels 0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, and 1.0.
Use the pair of scissors to cut along the axis or scale line so that 2 mirror-imaged logarithm scales or rulers are produced.
Position the two pieces of scaled paper so that the scaled edges are adjacent to form a basic linear slide rule.