Delta RetroSign GRX-1, User Manual

Page: 36 / 80

RetroSign GRX User Manual / December 2017
36
DELTA
•
Then press to accept the photo and continue the inspection.
•
Alternatively, to take a new photo press .
•
Or press to abort and continue the inspection without taking photo.
Conduct the inspection
Perform the measurement(s) when one of these messages appears on the screen:
or
Measure the sign background Measure the sign legend
•
Place
the RetroSign GRX on the element you want to measure and press ‘Measure’ on the
screen (or press the trigger-button on the GRX handle) to do the measurement reading. DELTA
recommend that the RetroSign GRX is in contact with the element when measuring, this will
ensure that the measurement angles are in accordance with the standard.
Note: Use the red measurement field center indicators placed on the sides and bottom of the
GRX instrument (indicate where the lens is positioned) as guidance to ensure you are placing the
GRX correctly: