13002 Brittmoore Park Dr
Houston, TX 77041-7231
Phone: 800-245-5707

Calculating Ra:
RA formula
L = evaluation length
Z(x) = the profile height function
The digital approximation is:
RA formula
Calculating RMS:
root mean square average formula
L = evaluation length
Z(x) = the profile height function
The digital approximation is:
RMS Average formula