Scope and ContentReference book: Solar Ephemeris for 1949 [and Other Data.] Published by Keuffel & Esser Co., N.Y., copyright 1948. Softcover, 3-3/8" x 6" high, 112 pp., diagrams, illustrations. Extensive pocket size reference book with information makes this book a reference manual for the care and use of surveying instruments including diagrams of equipment and parts lists along with instructions on repairing, adjusting and using the various types of alidades, dumpy & wye levels, transits, etc, Table of contents plus detailed index at rear. Keuffel & Esser Co. main office and factories were in Hoboken in the period when this item was made.