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Introducing the 3rd Edition of the WNDSN Grimoire Quadrantis Telemetrum

BERLIN, 2019-03-25 - WNDSN Quadrant Telemeters: Official Time & Space Manual provides the description and use of the Telemeter, Horary, and Sine Quadrant. This third, expanded and revised edition reiterates the fundamental concepts of distance and altitude calculations, and adds advanced tutorials, formulas, and reference materials. Mastery of Time and Space is an addendum to the Grimoire Quadrantis Telemetrum which covers setup, history, as well as the functions and tutorials regarding the mastery of space. The addendum explains the functions provided to help master time and date, by observing and calculating the movement of the Sun across the ecliptic, and year to complete the manual.

  • 240 pages
  • 72 figures
  • 17 tables
  • 24 equations
  • Bibliography
  • Indexed Glossary

The novice as well as the seasoned practitioner with practical interest and the teacher looking to demonstrate concepts in tangible ways are equally addressed and will find big picture information as well as detailed explanations. The reference section has been expanded again to create a Rosetta stone of trigonometry and a standalone resource for emergency or austere situations.

The tutorials show the use of the Universal Horary Quadrant and the Sine Quadrant; for the section on calendar use, a model created for a specific latitude is shown. For the examples and tutorials, a point has been made to only use simple formulas and no external ephemerides or constants for the calculations which can all be solved using the quadrant for measurements and computations (plus pen and paper for note-taking). Finally, the Sine Quadrant tutorials demonstrate the application of various combinations of basic trigonometric equations.

The unusual cover design pays homage to medieval mathematical and astronomical books; the styling of the title as a "Grimoire" is a play on textbooks of magic with instructions on how to make spells, talismans, and the like, "Grimoire Quadrantis Telemetrum" -- Textbook of the magic of Quadrants and Telemeters. Finally; the author's name at the top; "Filiusventi" is a hint at the practice of Renaissance scientists to latinize their names; venti is wind, and filius the son.

The WNDSN Quadrant Telemeter is a low tech, naked-eye observational instrument for measuring angles via various inputs and sighting methods. In addition, the Quadrant Telemeter is a graphical, analog computer providing functions to directly process or convert the acquired values. The Quadrant Telemeter allows to measure angular size and compute distance, height or depth of object, slope, altitude, or elevation, it provides an inclinometer as well as scales for the computation of sine, cosine, and tangent for a given angle.

Telemeters are WNDSN’s flagship products made in Germany. Available in brass for durability, acrylic for optical properties, and other materials for special applications, they feature exceptional design specifications and build quality, and are made to be passed on from generation to generation.

  • Paperback: 240 pages
  • Published: 2019-03-09
  • Language: English
  • ISBN-10: 1798221349
  • ISBN-13: 978-1798221341
  • Dimensions: 5 x 8 inches

The Telemeter manual is available at Amazon:



WNDSN's Applied Science Lab, based in Berlin, develops and manufactures that which can't be improvised; measurement, navigation, and surveying instruments informed by the motto "Ex Mensura, Scientia" -- knowledge from measurement.

WNDSN produces archival quality products that are designed with intent by combining techniques proven over centuries; arcane science meets cutting edge contemporary methods, resulting in iconic, timeless, high-utility designs.

In addition to custom-built instruments and tools, metrology & illumination solutions, WNDSN creates expedition mementos and morale patches to celebrate cross-disciplinary exploration in the spirit of the Renaissance. WNDSN morale patches are acutely designed -- no line is left to randomness, no element is mere filler. They serve as infographics, how-tos for the WNDSN tools, magic sigils, as well as functional markers.