Accuracy and precision 1 Analog computers 1 Area measurement 1 Aroostook County Cartographic generalization 1 Digitizers 1 Geodesy 1 Historical analysis 1 Human measurements 1 Iowa 1 Maine 1 Mapping 1 Measurement instrumentation 1 Planimeters 1 Surveying 1 US Census Bureau 1 United States 1 accuracy assessment 1 digitizer 1 instrument epistemology 1 instrumentation 1 literature review 1 map generalization 1 measurement method 1 observational method 1 planimeter 1 precision 1