Airfield Lighting Systems UK Limited
Aviation House, Russel Gardens, Wickford, Essex, SS11 8BF
Tel +44 1702 547562 Fax +44 1702 533962 Web
www.alsukltd.co.uk
g)
To adjust the angle required, slide the spirit level assembly forwards or backwards to align the
marker at the top with the required angle visible through the window on the sighting device.
h)
Check the spirit level bubble on the top of the sighting device, if it is level then no adjustment
is required and the fitting is ready to be used.
i)
To change the angle, adjust the locking screws on the base of the unit until the spirit level
bubble is in position and then re-tighten them. Adjust each screw separately and in turn i.e. do
not tighten one fully first then the next one, adjust them all equally so as to not move the final
setting.
