Troxler PaveTracker Plus Manual Of Operation And Instruction page 41

To change the offset, use the arrow keys to select the offset sign
(positive or negative). The gauge displays:
Enter the density offset as determined from the procedure on page
3–3 and press 〈ENTER/START〉. The gauge enables the new offset
and returns to the Ready screen.
Model 2701-B
Density Offset
+ #.## pcf
Input and
Press <ENTER>
3–5