Sampling length

Reference length

Standard length

Measured length

2400 rpm

2450 rpm

2500 rpm

2550 rpm

0.62 mm

0.92 mm

1.00 mm

1/8 mm

t + 0.5 d

t + d

t+1.5d

t + 2d

"cosecx"

"- cosx"

"-cosecx"

"cosx"