Renseignements généraux

Nº de série

3357

Nº de partie

1

Nombre total de parties

1

Ou

S/O

Brevets

S/O

Description générale

Sextant- brass; scale of arc a gold insert; glass; wooden handle case - wood (mahogany) with brass hardware

Dimensions

Remarque : Cette information reflète la taille générale pour l’entreposage et ne représente pas nécessairement les véritables dimensions de l’objet.

Longueur

25,0 cm

Largeur

28,0 cm

Hauteur

9,4 cm

Épaisseur

S/O

Poids

S/O

Diamètre

S/O

Volume

S/O

Lexique

Groupe

Transports maritimes

Catégorie

Instruments et équipement de navigation

Sous-catégorie

S/O

Fabricant

Ou

PORTER

Pays

England

État/province

Inconnu

Ville

London

Contexte

Pays

Inconnu

État/province

Inconnu

Période

Inconnu

Canada

Received from Energy, Mines and Resources, the federal government department responsible for surveys -- topographical, geodetic, etc. This particular instrument was acquired for the Hydrogaphic Survey of Can and has their inventory # 9 engraved on it. The case caries a verification tag from the National Physical Laboratory in Teddington, England dated May 1913 and stampted with the signature of the head of the lab, R.T. Glazebrook.

Fonction

A portable instrument designed for the purpose of measuring the angular distance between two objects. This one was used for lhydrographic surveys. It may possibly be associated with William Bayfield, the head of the Hydrogrpaic Survey and responsible for the mid-19th c surveys of the Gt. Lakes. A sextant such as this, with a stand, would also have been taken to land to measure angles between prominent land marks for the surveys.

Technique

This is a high end sextant (8 inch radius) with stand (1974.0109). The scale is machine rulled on platinum and the frame is gold plated. Only high end sextants such as this, were supplied with stands.

Notes sur la région

Inconnu

Détails

Marques

Stamped 'HYDROGRAPHIC SURVEY NO. 9' (FURTHER INFORMATION COULD BE OBTAINED FROM E.M.R.)/ Attached to lid of case: 'CERTIFICATE OF EXHAMINATION' (BY THE NATIONAL PHYSICAL LABORATORY - DATED MAY 1913)

Manque

Complete

Fini

Brass lacquered (clear) except for part of framework, the shades & horizon glass which have a flat black finish/ case stained, varnished; incl. brass lock with key

Décoration

S/O