Procedure

1. Select a spring and a rubber band
These will be analyzed in this experiment. Take note of some of their physical characteristics (width, length, color). Notice that other student's equipment is different. 

2. Experiment setup
    Setup the experiment as in the picture with either the mechanical force scale and the spring or the digital force sensor and the elastic band. You will be measuring position and applied force. The ruler is taped down (use masking tape) in an arbitrary location.
    The setup is arranged such that when no force is applied, your measured position will be something other than zero (zero force must not yield a zero position reading). Position can be measured from any reference point (zero position can be anywhere).
    Record, in your notes, the setup with enough information such that someone could replicate your work (including what spring was used, how the equipment was setup, if digital - how it was connected to the computer and the software used). Test your setup taking note of the maximum and minimum data that is possible for both position and force.

3. Prepare to take data
Prepare a table in your notes to record position and force. Prepare a graph for plotting force and position with force along the x-axis. Scale your graph from your test maximum/minimum data in simple increments (such as multiples of 1, 2, 4 or 5).

4. Take data
For each trial (force applied), record the measured values into your data table and also onto your graph. Data does not need to be taken in equal increments or in sequence. Use the graph to help you in determining where additional data would be useful. Repeating measurements can simply be added to the data table and added to the graph (do not erase any data).

5. Collect a minimum of 5 data points.  

6. Repeat with the other force sensor and object
Use separate data tables and graphs in your notes. On concluding this procedure, you will have two separate graphs with the actual data values in your notes.  One data set and graph for the mechanical force sensor and the spring and another data set and graph for the digital force sensor and the elastic band.