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ProScan H138A


Motorized Microscope Stage With 8 Slide Capacity

The H138A motorized XY stage is designed for integration into custom microscopes or OEM designs and adapts to different hardware configurations

It uses a 2 mm pitch ballscrew and 200-step motor drive to cover its large travel area quickly, and features Prior's patented Intelligent Scanning Technology (IST) to optimize stage accuracy and linearity.

The H138A fits up to eight 75 mm x 25 mm microscope slides and offers extended lateral travel for imaging large samples, such as PCBs, or arrays of multiple samples. 

See the product compatibility tab for the full list of options available.


    • Compatible with most brands of upright microscopes and fully customizable for use in OEM projects
    • 1µm or better repeatability
    • Extended lateral travel for imaging larger samples or multiple slides
    • Wide range of sample holders
Travel range 240 mm x 71 mm
Unidirectional repeatability < 1 μm
Bidirectional repeatability < 3.9 μm
Metric accuracy 0.15 μm/mm
Full travel metric accuracy < 34.0 μm
Resolution 0.04 μm
Squareness < 50 arcsec
Maximum velocity 60 mm/s
Maximum load 10 kg
Encoders No
Motor type 200 step
Screw pitch 2 mm
Weight 5 kg

Specifications as per datasheet. Please see datasheet for details.

  • H288 Glass plate (not suitable for transmitted light microscopy).

  • H239 Aluminum plate (H138)

  • H238LP Low profile slide holder for eight 76x26 mm Microscope Slides.

Option Manufacturer Compatibility Notes

H138A

Prior OpenStand-U, OpenStand-M, OpenStand-L

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