U.S. National Weather Service (NWS) - Signal Service weather office in South Dakota (c. 1890). The instrument shelter is attached to the building with the wind equipment located to the rear of
![NWS Instruments AG introduces 23mm APO, 110mm APO lenses and the Akrobat™ Modular Instrument Positioning System | Business Wire NWS Instruments AG introduces 23mm APO, 110mm APO lenses and the Akrobat™ Modular Instrument Positioning System | Business Wire](https://mms.businesswire.com/media/20190114005288/en/700005/5/NWS_Instruments_AG_23APO.jpg)
NWS Instruments AG introduces 23mm APO, 110mm APO lenses and the Akrobat™ Modular Instrument Positioning System | Business Wire
![NWS Instruments AG introduces 23mm APO, 110mm APO lenses and the Akrobat™ Modular Instrument Positioning System | Business Wire NWS Instruments AG introduces 23mm APO, 110mm APO lenses and the Akrobat™ Modular Instrument Positioning System | Business Wire](https://mms.businesswire.com/media/20190114005288/en/700003/5/NWS_Instruments_AG_110APO.jpg)
NWS Instruments AG introduces 23mm APO, 110mm APO lenses and the Akrobat™ Modular Instrument Positioning System | Business Wire
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