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PLATE
THE GREAT THREE-FEET THEODOLITE,
(Constructed by Troughtonand Simms,forthe G. T. Survey of India.)
(Upload an image to replace this placeholder.)
PLATE
THE GREAT THREE-FEET THEODOLITE,
(Constructed by Troughtonand Simms,forthe G. T. Survey of India.)
(Upload an image to replace this placeholder.)