Especially useful in Optical / Visual evaluation or where cross consistency among users is important.Alphanumeric configuration with a frequency range of 1-18 cycles/mm in 25 groups repeated in 4 rotated quadrants. The T-30 chart is also available in custom sizes and contrasts values.
|Billable Weight:||2 lbs|
4.0 in. x 4.0 in. – 101.4mm x 101.4mm
1 to 18 cy/mm
Alphanumeric features in 25 groups repeated in 4 rotated quadrants