Suunto 1520, PM5 manual

Page 14

The trigonometrical correlation is

H = h x cos α

Where H is the true or corrected height, h is the observed height and α (alpha) is the ground slope angle. With the aid of the above equation the correction can also be made in the distance. In this case h means the distance measured along the ground and H is the horizontal distance sought. If the corrected distance is used no correction in the height observed is needed. When calculating the horizontal distance by using the ground distance and the slope, it must be pointed out that an error is introduced if the slope is measured from eye level to the trunk base. Measuring the slope along the ground would be cumbersome and inconvenient. No error is introduced, however, when the slope angle is measured from eye level to sighting mark made or placed on the trunk at eye level whereby the two lines of measurement become parallel. The true angle of slope is 9 degrees.

The example shown in the follow- ing figure illustrates both meth- ods of calculation.

Method 1. Measure the ground distance. This is found to be 25 m / 82 ft. Then measure the slope angle. This is 9 degrees. Read percentages of top and ground points. These are 29 and 23 per cent.

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Contents PM-5 / PM-5/1520 Customer Service Contacts Users Guide Table of Contents Optical Height Meter Instructions for USEMeasurement of Height Instructions for USE Nomogram Establishing the Basic DistanceImportant notice Construction features Optical Reading ClinometerAvailable PM-5 Versions SpecificationsResolution Instructions for USE Page Page Page 24,6m= 12,8m 52 × 100 Nomographical Height Correction Instrument Body Cover for Suunto KB-14 and PM-5 Guide DE Lutilisateur Table DES Matières Mode D’EMPLOI Altimètre OptiqueMesure DES Hauteurs Mode D’EMPLOI DU Nomogramme Détermination DE LA Distance DE BaseRemarque importante Clinomètre À Lecture Optique Caractéristiques de la constructionVersions DE PM-5 Disponibles RésolutionCaractéristiques techniques Mode D’EMPLOI Page Page La corrélation trigonométrique est la suivante = h x cos α Calculer Correction DE LA Hauteur Nomographique Protection DU Corps DES KB-14 ET PM-5 DE Suunto Bedienungsanleitung Inhaltsverzeichnis Optischer Höhenmesser GebrauchsanleitungHöhenmessung Verwendung DES Nomogramms Ermittlung DES BasisabstandsWichtiger Hinweis Optischer Klinometer KonstruktionseigenschaftenErhältliche Ausführungen DES PM-5 Technische SpezifikationenAuflösung Gebrauchsanleitung Page Page Page Berechnung Oder im britischen Maßsystem Nomographische Höhenkorrektur Schutzhülle FÜR Suunto KB-14 UND PM-5Guía DEL Usuario Índice Medidor Óptico DE Alturas Instrucciones DE USOPage Instrucciones DE USO DEL Nomograma Cómo Determinar LA Distancia BásicaAviso importante Inclinómetro Para Lectura Óptica Características constructivasVersiones DE PM-5 Disponibles EspecificacionesResolución Instrucciones DE USO Page Page Page 100 De forma equivalente en pies Corrección DE Altura CON EL Nomograma Cubierta DE Carcasa DE Instrumento Suunto KB-14 Y PM-5Guida Dellutente Indice Metro Ottico PER Altezza Istruzioni PER LusoPage Istruzioni PER Luso DEL Nomogramma Stabilire LA Distanza BaseNota importante Clinometro a Lettura Ottica Caratteristiche della strutturaVersioni DI PM-5 Disponibili SpecificheRisoluzione Istruzioni PER Luso Page Page Page 100 Oppure in piedi Correzione Nomografica Dellaltezza Käyttöopas Sisällysluettelo Optinen Hypsometri KäyttöohjeetPage Nomogrammin Käyttö Tärkeää tietää Kaltevuusmittari RakenneSaatavana Olevat PM5-MALLIT Tekniset tiedotMittaustarkkuus Käyttöohjeet Page Page Page Laskutoimitus Nomogrammin Käyttö Korkeuden Korjaamiseen Page Bruksanvisning Innehållsförteckning Optisk Höjdmätare AnvändningsanvisningarHöjdmätning Användning AV Nomogram Bestämning AV BasavståndetViktigt meddelande Höjdmätare FÖR Optisk Läsning Konstruktionens funktionerTillgängliga PM-5-VERSIONER SpecifikationerNoggrannhet Användningsanvisningar Page Page Page × 24,6m= 12,8m 100 × 80,9ft= 42ft Nomografisk Höjdkorrigering Page Suunto Oy 2/2006, 3/2006, 8/2007