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Written by William Gaertner


Astronomical Instruments and Accessories

Astronomical Instruments and Accessories

by William Gaertner

In the following pages we have endeavored to give to our customers an idea of the line of astronomical instruments of the latest and most improved types which we have constructed for some of the leading observatories as mentioned in the text. We feel that this series of illustrations may not only be of general interest, but also of service in helpi..