Operating instructions - 2018 updates:

Lacquer thickness gauge GL-PRO-2-F, FA, FAZ - operating instructions
Lacquer thickness gauge GL-PRO-6-F, FA, FAZ - operating instructions

Operating instructions - 2017 updates:

GL-2 + paint thickness gauge - user manual
Paint thickness gauge GL-6 +, GL-6s + - user manual
GL-6XL paint thickness gauge - user manual
Paint thickness gauge GL-8, GL-8s - user manual
GL-mini paint thickness gauge - user manual

Manual user instructions:

Lacquer thickness gauge GL-1, GL-1s - user manual
GL-1maxi paint thickness gauge - user manual
Paint thickness gauge GL-2B, GL-2H - user manual
GL-3, GL-3s paint thickness gauge - user manual
Paint thickness gauge GL-6, GL-6s - user manual
Paint thickness gauge GL-6H, GL-6Hs - user manual
Paint thickness gauge GL-7, GL-7s - user manual
Paint thickness gauge GL-1 +, GL-1s + - user manual

Instructions withdrawn:

GL-PRO-1 paint thickness gauge - user manual - discontinued, replaced by the G-PRO-2 model
Paint thickness gauge GL-8, GL-8s - operating instructions- discontinued, see newer model - update 2017
GL-2 + paint thickness gauge - user manual - discontinued, see newer model - 2017 update
Paint thickness gauge GL-6 +, GL-6s + - operating instructions- discontinued, see newer model - 2017 update
GL-6XL paint thickness gauge - user manual - discontinued, see newer model - 2017 update
GL-mini paint thickness gauge - user manual - discontinued, see newer model - 2017 update