Sokkia 130R Series Operator's Manual page 21

Guide light (Optional function)
"31. OPTIONAL ACCESSORIES"
Guide light
indicator
Guide light and Guide light indicator
Setting-out measurement etc. can be carried out effectively using the Guide
light. The Guide light is composed of a light that is divided into a red and a
green light. A poleman can ascertain the present position by checking the
Guide light color.
green red
Guide light status
Light status
Red
Green
Red and Green
The Guide light indicator is lit when the Guide light is ON.
Guide light
(From position of poleman) Move target left
(From position of poleman) Move target right
Target is at correct horizontal position
4. SET FUNCTIONS
Meaning
13