TWO LEGS - A story of Mankind through the Ages for Children. E-book. Formato PDF Carl Ewald   -  Abela Publishing, 2021  - 

Way back at the beginning of time, when animals and mankind could converse with ease, Mrs Two legs had a son. All the animals gathered around and all generously gave gifts to the Two Legs family. But the Two Legs family were never really accepted as one of the animals. They walked erect and not on all fours, their foreheads were high, their eyes firm and steady, they had no fur and they went about hand in hand. How strange? Here Carl Ewald paints a picture of natural competition amongst species and how certain species rise to places of domination, but in particular how man, once equal with all species, rose to become the superior being on planet Earth. Ewald takes young readers on a journey from the beginning of time through all epochs – the stone age, the iron age, the industrial revolution and the rise steam power, to the invention of electricity at which at the time the book was written. There are also warnings that every action has a consequence and that when mixed with greed has dire consequences as humankind is now finding out. However, sit back and enjoy a trip through the ages of man, and be prepared to answer questions, lots of questions, from bright and enquiring minds. 10% of the profit from the sale of this book is donated to charities. ================= KEYWORDS/TAGS: two legs, folklore, fairy tales, myths, legends, man, story of, mankind, children’s stories, fables, the old animals, mrs two-legs,  son, baby, kill, hunt, time passes, possessions, wander, sow, crops, grow, harvest, enjoy life, counsel, lion, conquers, the air, wind, steam, electricity, future, Illustrated, visitors, two people, through the forest, rain, pluck, feathers, good choice, choose, shoot an arrow, left wing. Stand, stood, edge, woods, no time to lose, neither bad nor good, Catch me, Use me, stand up, stood up,

Topographic Stadia Surveying: A Manual With Reduction Tables and a New Type of Reduction Diagram. E-book. Formato PDF Carl Ewald Grunsky   -  Forgotten Books, 2017  - 

Telescope Cross-hairs, Adjustable or Fixed. The telescope to be used in stadia work is equipped with three horizontal cross-hairs. The spacing of these cross-hairs may be either adjustable or fixed. For general use the fixed cross-hairs are preferred by most engineers and surveyors, though they are not without their disadvantages.When the cross-hairs are adjustable frequent testing of the instrument rating may be necessary.When the cross-hairs are fixed (this term being here use in the sense of permanent in their relative positions, i.e., non-adjustable), the instrument's rating as reported by its maker should be carefully tested before any surveys requiring the limit of attainable accuracy are undertaken.Tachymetry. Tachymetry is that branch of surveying which deals with the rapid measurement of distances, as, for instance, the determination of distance from an instrument by sighting with its telescope to a rod.Telemeter. The term "telemeter" may be applied to any telescope equipped with cross-hairs for measuring distance, or equipped with micrometer screw or other device for accurate determination of the length of rod subtended by an angle of known amplitude.