Navigational equipment
The Astrolabe astrolabes
The Astrolabe
A working model of the Dr. Ludwig Oechslin's Astrolabium Galileo Galilei watch modules
www.Rogivue.com - Ulysse Nardin Astrolabium Galilei Galileo
Federation of the Swiss Watch Industry
Federation of the Swiss Watch Industry FH - Homepage
American Watchmakers-Clockmakers Institute net
American Watchmakers - Clockmakers Institute
ARobot Digital Compass App Note robotics compass
Arrick Robotics --- ARobot Digital Compass App Note
How compasses work "
Howstuffworks "How Compasses Work"
The Medieval Technology Pages: Compass scholar compass
Medieval Technology Pages - Compass
The Riddle of the Compass " (interview with Amir Aczel, first broadcast on NPR on May 31, 2002).
May 31, 2002, Hour Two: 'The Riddle of the Compass' / Naps and Learning
USGS Geomagnetism Program
USGS National Geomagnetism Program | Home
rbmn (in french)
KREBS - Le gyroscope électrique du GYMNOTE 1889
84th Radar Evaluation Squadron ". US Air Force Squadron responsible for long-range Radar Sensor (both civilian and military) operational availability, counterdrug, search and rescue, and flight safety information assurance to the operations community.
RADES Public Home Page
The Development of Over-the-Horizon Radar in Australia "
Early Radar History - an Introduction". 2002.
Radar: Early Radar History - an Introduction
Radar World
radar
Radar Family Tree ".
radar
Introduction to Naval Weapons Engineering.''". (Radar fundamentals section) man dod navy docs syllabus
ES310
Introduction to
Naval Weapons
Engineering
WW2 Shadow Factory The secret development of British Radar.
Ekco Radar Cowbridge House Malmesbury
Telephone History: Radar History ". Privateline.com. (Anecdotal account of the carriage of the world's first high power cavity magnetron from Britain to the US during WW2.)
Privateline.com Telephone History: Radar History by Buderi Page 2
All you ever wanted to know about British air defence radar ". The Radar Pages. (History and details of various British radar systems)
The Radar Pages Home page
The first operational radar in France 1934 radar france
histoire du radar,les faits
Build your own sextant from a CD and CD case Simple do-it-yourself project.
CD-Sextant - Build your own sextant
Instruments for Celestial Navigation Chapter from the online edition of Nathaniel Bowditch's American Practical Navigator
Die Yacht magazine, 22/1997: Mini-Sextant: Mit einem genial einfachen Gerät verblufft Weltumsegler Sven Lundin jetzt die gesamte Fachwelt.
YACHT online
Yachting Monthly magazine, June 1997.
Yachting Monthly online
Instructions for the construction of a Torquetum instruments
ESI_RepInst.Torquetum
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Astrolabe , Chronometer , Clock , Compass , Dipole , Gyrocompass , Radar , Sextant , Torquetum , .
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