Constructing this is very easy but using it needs more explanation so I will be spending most of this instructable focusing on its use. The images on this page are all that I am going to give you to build it with.
*Note: Use new snowflake connectors for shock absorbers.
Step 1: How to Use It
Measurement: Each gray, 45 degree connector is another number on the scale, the first gray piece is a 1, the second is a 2, etc. Each red piece on the scale can be made into a fraction, for example: if the measuring marker lands on the second red connector after number 2 on the scale, than that is considered a force of 2 and 2/4 (two and two fourths), the third red connector after 4 is the 4 and 3/6 mark. If the measuring marker lands between two pieces, round the result to the closest piece.
Count the number of snowflake connectors you used as resistance in the force test, put this number before the force number with a "-" in front of it, for example "2-3 and 3/5" (two, three and three fifths) is a force reading while using 2 white connectors as resistance. If any of this confuses you just show me a picture of the results and I will read it for you.
Conversion: To convert the results of tests with different numbers of white connectors; simply multiply the result by .6 to have the effect of adding one connector or multiply it by 1.66 to convert down one connector. This can change a reading from say "2-2 and 3/4" to "3-1 and 2/3".
Uses: This gauge can be used when moddifying guns to figure out if they have increased in power, it can be used to compare the power of your guns and other peoples k'nex guns, and it can be used to compare your personal collection.