How to Make a Homemade Caliper

 

Materials needed:

• Cardboard box
• Razor Knife
• Ruler or Square
• Pencil

 

STEP 1
Place your straight edge along your cardboard seam and edge and use your
marker to make a line. Make two outlines.

STEP 2
Use your cardboard cutter to cut out the two right angle forms. Now you have two
arms of a caliper.

STEP 3
Attach them together with a paper clip.

STEP 4
Hold your cardboard caliper over the area to be measured so that the points of the
caliper barely touch the subject.

STEP 5
Measure between the arms of the caliper.