Books from Wndsn Applied Science Lab

Grimoire Quadrantis Telemetrum (GQT6 EN)
Wndsn Quadrant Telemeters: Graphical Telemetry Computers (GQT6 EN)
Instruments for the Mastery of Time and Space

Filiusventi, 2026

Wndsn Applied Science Lab, Berlin
Language: English
Paperback, 5.5 x 8.5 inches, 564 pages
6th Edition
ISBN-10: 8243846523
ISBN-13: 9798243846523
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The 6th and final edition of the Grimoire Quadrantis Telemetrum celebrates 10 years of Telemeter development, research, and worldwide exploration. The Wndsn Quadrant Telemeter is a low tech, naked-eye, observational instrument that allows the user to measure angular size, distance, height or depth of object, slope, altitude, or elevation via various inputs and sighting methods. In addition, the Quadrant Telemeter is a trigonometry-based, graphical, analog computer that provides built-in functions to directly process or convert the acquired values. Featured is an inclinometer as well as scales for the computation of sine, cosine, and tangent for any given angle. It is possible to solve right-angled and non-right angled triangles without the use of digital means. The Quadrant Telemeter is a star compass and star chart, a sundial, and a coordinate scale. This manual covers the theory and practice of the instrument.

The 6th edition further clarifies the naming conventions: the various Quadrants are more differentiated with the former Horary Quadrant now called the Astronomical Quadrant and the universal or generic one now called the Surveying Quadrant. The Astronomical Quadrant received two major additions, a number of navigational stars have been added and the equal hour lines extend to show the hours of twilight.

This book is a description of the tools, principles, functions, and methods which together make up the operating system of the Quadrant Telemeter and its specialized variants. It's a practical manual for the beginner, as well as a study guide and textbook for the advanced user. It includes tutorials for all functions and methods, as well as the graphically worked formulas and a number of useful reference tables.

The 6th edition expands upon the 4th and 5th edition, now clocking in at 564 pages, 244 figures, 39 tables, 50 equations, 230 cross-references, 144 glossary entries, and 104 bibliography entries.

From the changelog:

• Many simplified and/or expanded explanations.
• Once again dozens more and refined graphics.
• Streamlined and tightened layout (otherwise this edition would be way over 600 pages long).
• Some new naming conventions for clarity.
• Addition of stars to the Quadrant, including how to use the data.
• New scales and symbols explained.
• Added required and acquired Telemeter skills.
• Community contributions are once again featured throughout from users in the field.
• Expanded glossary and bibliography.
• Errata from prior versions processed.

Sample citations

Chicago:

Filiusventi. Wndsn Quadrant Telemeters: Graphical Telemetry Computers (GQT6 EN). Wndsn Applied Science Lab, 2026.

APA:

Filiusventi. (2026). Wndsn Quadrant Telemeters: Graphical Telemetry Computers (GQT6 EN). Berlin: Wndsn Applied Science Lab.

BiBTeX:

@book{Filiusventi_2026,
place={Berlin}, title={Wndsn Quadrant Telemeters: Graphical Telemetry Computers (GQT6 EN)}, publisher={Wndsn Applied Science Lab}, author={Filiusventi}, year={2026}, address={Berlin}, isbn={9798243846523}, url={https://books.wndsn.com/?isbn=9798243846523}, edition={6th},
}

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