Obsnap Instruments Sdn Bhd
29A, Jalan SS 15/4C, 47500 Subang Jaya, Selangor, Malaysia.
+603-5621 5786
+603-5621 5829
+60122185651 (Enquiry)
+60162233687 (Vacancy)

Geomax ZAL300

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Geomax ZAL300 Automatic Levels Surveying Instruments

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GeoMax Automatic Level ZAL300 Series

Get all your tasks done with GeoMax´s level flagship. From daily levelling tasks to high accuracy – the ZAL300 Series is your first choice where robustness, comfort and accuracy count. It simply "Works when you do!"

Built for toughest conditions
The ZAL300s class leading optics and magneX™ compensator are imbedded in a sealed and shock protected housing making it highly resistant to bumps and all weather conditions. Even following a short drop the GeoMax ZAL300 continues to works with the same reliability and accuracy.


  • 2.5mm/2.0mm/1.5mm/1.2mm (ZAL330/328/324/320) Standard deviation for 1 km double-run levelling
  • 30x/28x/24x/20 (ZAL330/328/324/320) Magnification
  • Erect Image
  • Double sided endless drive
  • Cross hairs with stadia lines
  • magneXTM, automatic, magnetic-damped
  • ± 15´working range of compensator
  • 360° graduation on horizontal circle
  • -20°C to +40°C operating temperature range
  • +50° C instead +40° C
  • Conforms to IP57 (gas filled telescope)
  • Concave and flat base for 5/8" base screw


Telescope ZAL330 ZAL328 ZAL324 ZAL320
Magnification 30x 28x 24x 20x
Objective aperture 40mm 40mm 36mm 30mm
Minimum focusing distance 0.8m 0.8m 0.6m 0.6m
Stadia multiplication constant 100 100 100 100


Compensator :

Damping system                                                              magneX™, automatic, magnetic-damped

Working range                                                                  +- 15'


Setting accuracy (standard deviation) <0.3" <0.3" <0.5" <0.5"


Levelling Accuracy

Standard deviation for 1km double-run levelling  1.2mm  1.5mm  2.0mm  2.5mm



Horizon Circle                                                                    360 degree/400 gon, selectable


Horizontal fine motion screws                                       Double-sided endless drive

Dust and Water resistance                                            Conforms to IP57 (Gas filled telescope)

Base / Base screw                                                          Concave and flat / 5/8"

Weight 1.7kg 1.7kg 1.6kg 1.6kg


Operating temperature range                                        -20º C to +50º C


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