1884 Gurley Instrument Illustrations
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Engineer's Transit with Solar Attachment
Engineer's Transit
Light Mountain Transit with Jones' Patent Lat. Arc
Surveyor's Transit with Solar Attachment
Surveyor's Transit
Vernier Transit Compass
Solar Compass
Railroad Compass
Vernier Compass
Plain Compass
Telescopic Sight
20 inch Wye Level
Pocket Solar Compass
Pocket Railroad Compass
Telescopic Attachment for Pocket Compass
Vernier Pocket Compass
Dial Compass