A comparison of American Paulin system and Wallace and Tiernan altimeters, and a survey of part of the city of Rensselaer, New York by aerial photographs with the use of altimeters

Abstract

The use of altimeters in conjunction with aerial photographs offers board possibilities in the mapping of large tracts of land by small parties at a minimum of cost. Since relatively little work has been done on this topic, our party accepted for its thesis subject a two-fold plan intended to test the suitability of this method of elevation determination both under laboratory and under field conditions.