1920s Christiana Machine Co. WaTeR TURBiNES and GeaRS Catalog ORIGINAL

Description

Last of new "old stock" in excellent condition.
CMC Hydraulic Turbines, Catalog 307
, and
Turbinas Hidraulicas, CMC Catalogo No. 306-S
, Christiana Machine Company, Christiana, Penna., 1926.
These are
ORIGINAL, not reprinted
, catalogs of the water turbines and gears manufactured by CMC in the 1920s. These English and Spanish versions are almost identical except for a handful of different pictures in one version that are not in the other. Together, you get some excellent drawings of vertical and horizontal water turbines and their components; instructions for “Measuring Small Streams by a Weir”:  and tables and graphs of water flows and appropriate turbine dimensions and capacities. There is a four-page table that provides the horse-power, cubic feet, and revolutions per minutes of 17 turbine sizes (from 6 to 60) for every two heads of feet, from 4 to 66.
You get both the English and Spanish catalogs. These are originals, not reprints.