# Technical Data

Optical level | GOL 20 D | GOL 20 G | GOL 26 D | GOL 26 G | GOL 32 D | GOL 32 G
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Article number | ‎3 601 K68 400‎ | ‎3 601 K68 401‎ | ‎3 601 K68 000‎ | ‎3 601 K68 001‎ | ‎3 601 K68 500‎ | ‎3 601 K68 501‎
Working range | 60 m | 60 m | 100 m | 100 m | 120 m | 120 m
Height accuracy for single measurement | 3 mm/30 m | 3 mm/30 m | 1.6 mm/30 m | 1.6 mm/30 m | 1 mm/30 m | 1 mm/30 m
Deviation for 1 km double levelling | 2.5 mm | 2.5 mm | 1.5 mm | 1.5 mm | 1.0 mm | 1.0 mm
Accuracy of the bubble vial | 8´/2 mm | 8´/2 mm | 8´/2 mm | 8´/2 mm | 8´/2 mm | 8´/2 mm
Compensator
Levelling range | ±15´ | ±15´ | ±15´ | ±15´ | ±15´ | ±15´
Magnet dampening | ● | ● | ● | ● | ● | ●
Telescope
Image | upright | upright | upright | upright | upright | upright
Magnification | 20 x | 20 x | 26 x | 26 x | 32 x | 32 x
Field of view | 1°30´ | 1°30´ | 1°30´ | 1°30´ | 1°30´ | 1°30´
Lens diameter | 36 mm | 36 mm | 36 mm | 36 mm | 36 mm | 36 mm
Minimum measuring distance | 0.3 m | 0.3 m | 0.3 m | 0.3 m | 0.3 m | 0.3 m
Multiplication factor | 100 | 100 | 100 | 100 | 100 | 100
Addition constant | 0 | 0 | 0 | 0 | 0 | 0
Horizontal circle graduation | 1° | 1 gon | 1° | 1 gon | 1° | 1 gon
Tripod mount | 5/8" | 5/8" | 5/8" | 5/8" | 5/8" | 5/8"
Weight according to EPTA-Procedure 01:2014 | 1.5 kg | 1.5 kg | 1.5 kg | 1.5 kg | 1.5 kg | 1.5 kg
Protection rating | IP 54 (dust and splash-proof)

The serial number (15) on the type plate is used to clearly identify your measuring tool.