1. Marker Functionality #1 Test Markers (Red Sharpe) 1234Average Diameter (inches).449.420.438.449.439 Length (inches) 4.8504.8424.8724.8574.885

2. Reasons For Test #1 Critical marker diameter for marker chuck. Critical marker length for lifter, cam, and rover frame height design.

3. Marker Functionality #2 Test Lifespan Test of Sharpe Estimated life of marker is about 60 minutes of constant ink tip contact.

4. Reasons for Marker Functionality #2 Test See if marker tip changes shape. See how often a marker would have to be changed.