This is a 3D printed mod for a ruler to turn a normal ruler into a semi accurate set of analog calipers. If you do not have a set of more accurate calipers you can simply use a ruler, and this set of files to create an analog set of calipers. Obviously, this set of calipers is not as accurate as a professional set, but depending on your ruler, these calipers are normally accurate within a few millimeters.

Assembly Instructions

• Place the sliding caliper peace on the ruler
• Place the caliper end cap on the end of the ruler
• If the end cap is too big, you can wrap the ruler's end in tape to make it thicker (you can also remix the file)

Note: Some rulers have very little distance between the end of the ruler and the first measurement mark. If this is the case, on your ruler, note the amount of the measurement marks that the end cap covers and subtract that from your measurements. For example, if your end cap covers 5 mm of measurement marks and the measurement you make is 35 mm, the actual measurement is 30 mm.

File Variations

There are different file variations available for different thicknesses of ruler. There are also variations of files for the difference in a ruler's distance from the edge of the ruler to the first measurement mark.

Printing Instructions

• Material: PLA or PETG (for extra strength)
• Supports: Yes (there are 1 or 2 vertical overhangs on one of the pieces, depending on how you orient it)
• Orientation: Print the files vertically as they are shown in the files

If you enjoy this model, please leave a like and a comment. If you have any questions, concerns, or problems, please personally contact me.