General Instructions for Extended Studentsa#39; Surveys Walter Loring Webb ... Draw on the paper, with extreme accuracy, a circle 2aquot; in diameter, a circle 6aquot; in diameter, a 2aquot; square and a 4aquot; square. The 6aquot; circle ... The Difference in the readings divided by the known area in square inches gives the reading per square iiich.
|Title||:||Problems in the Use and Adjustment of Engineering Instruments|
|Author||:||Walter Loring Webb|