Next, enter the prism value to ten-key which is displayed and touch the enter key .
After entering the value, touch to return to measurement screen.
> The cross cursor is displayed at the entered prism prescription value.
> The crosshair cursor moves as follows according to the entered prism value.
Prism prescription value input screen (Polar coordinate)
First, touch the axis for entering at the prism input value screen.
USER MANUAL > BEFORE MEASUREMENT
33 ALM800 - Auto lensmeter > V1 - 05-2020