Abel Foullon; France, (1513 - 1563 or 1565) was an author, director of the Mint for Henry II of France and also an engineer to the king of France after Leonardo da Vinci. 1513 was a common year starting on Wednesday (see link for calendar) of the Gregorian calendar. ... Events February 1 - Sarsa Dengel succeeds his father Menas as Emperor of Ethiopia February 18 - The Duke of Guise is assassinated while besieging Orléans March - Peace of Amboise. ... // Events March 1 - the city of Rio de Janeiro is founded. ... Henry II (French: Henri II) (March 31, 1519 – July 10, 1559), a member of the Valois Dynasty, was King of France from March 31, 1547 until his death. ... Leonardo di ser Piero da Vinci (April 15, 1452 – May 2, 1519) was a talented Italian Renaissance Roman Catholic[1] polymath: architect, anatomist, sculptor, engineer, inventor, geometer, scientist, mathematician, musician, and painter. ...

His Holometer is an instrument for making of angular measurements for surveying.

Bibliography

• Abel Foullon, Usaige et description de l'holometre pour scavoir mesurer toutes choses qui sont soubs l'estendue de l'oeil, Paris: P. Béguin, 1555.
• Chevalier de Brunet-Varennes: Holometer, oder neues sehr genaues Instrument, um Zeichnungen in der Geometrie, so wie alle Zeichnungen nach der Perspectiv-Kunst zu erleichtern. 15 S. Mit 1 Taf. In: Polytechnisches Journal. Hrsg. J. G. Dingler. Bd. 34.; Erschienen: Stuttgart, Cotta, 1829.

External links

• http://wissensgeschichte.biblhertz.it/Glossario/Glossario_Italiano/olometro/
• http://www.nv-landsurveyors.org/files/Topographic_Mapping_ACSM_Student_Competition.pdf