Renseignements généraux

Nº de série

10443

Nº de partie

1

Nombre total de parties

9

Ou

S/O

Brevets

S/O

Description générale

ALL METAL CONSTRUCTION, INCLUDING BRASS, ALUMINUM, AND POSSIBLY CAST IRON. RUBBER COVERING ON WIRES. COTTON CANVAS BAG & WOODEN BOX ARE PTS. PAPER SHEET SECURED ON RECORDING DRUM..9 LEAD WEIGHT INSIDE BRASS CASING.

Dimensions

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

Longueur

41,2 cm

Largeur

18,5 cm

Hauteur

22,0 cm

Épaisseur

S/O

Poids

S/O

Diamètre

S/O

Volume

S/O

Lexique

Groupe

Exploration et levé

Catégorie

Mesure-position

Sous-catégorie

S/O

Fabricant

Ou

Bausch Lomb

Pays

United States of America

État/province

New York

Ville

Rochester

Contexte

Pays

Canada

État/province

Inconnu

Période

THIS TYPE OF INSTRUMENT USED C.1930S-1970S AND POSSIBLY LATER.

Canada

USED BY GEODETIC SURVEY OF CANADA, PRESUMABLY ON LAND SURVEYS. RECORDS OF A SIGNAL GIVEN BY A CHRONOMETER (POSS.900278) AT PRECISE INTERVALS COULD BE RECORDED ON THE CHRONOGRAPH AND COMPARED WITH CELESTIAL OBSERVATIONS TO ESTABLISH POSITION OR CALCULATE DISTANCE (REF.2, P.27)

Fonction

TO MEASURE SHORT INTERVALS OF TIME AND RECORD THESE INTERVALS ON PAPER

Technique

EXAMPLE OF A RECORDING CHRONOGRAPH. TYPICALLY, A SHEET OF PAPER IS DRAWN UNIFORMLY BENEATH A PAIR OF RECORDING PENS, ONE OF WHICH IS DEFLECTED BY MEANS OF AN ELECTRO-MAGNET AT THE INSTANT TO BE DETERMINED OR AT THE BEGINNING OR END OF THE INTERVAL TO BE MEASURED. THE OTHER PEN IS OPERATED AT REGULAR INTERVALS BY MEANS OF SIGNALS TRANSMITTED FROM A CLOCK AND SO MARKS A TIME SCALE ON THE RECORD (REF.1, P.75).

Notes sur la région

Inconnu

Détails

Marques

.1 STAMPED ON SQUARE BASE OF GOVERNOR HOUSING 'BAUSCH & LOMB OPTICAL CO./ ROCHESTER, N.Y./ [LOGO - INVERTED TRIANGLE CONTAINING 'B-L/ Z S]'; '10443' STAMPED BELOW/ '62' HANDPAINTED IN RED ON BASE/ '4' STAMPED IN BRASS PULLEY WHEELS AND WEIGHT ARMS/ '62' HANDWRITTEN IN BLACK MARKER ON CASE/ PAPER LABEL STAPLED TO CASE LID READS: 'ASTRONOMICAL/ INSTRUMENT/ WITH CARE'/.2 '2' STAMPED ON GEARED WHEEL & END CAP

Manque

UNKNOWN

Fini

.1 BLACK WRINKLE-FINISH APPLIED TO BASE & DRUM SUPPORTS. SILVER METAL GOVERNOR HOUSING HAS THIN BRASS-COLOURED WASH APPLIED AS FINISH; GOVERNOR WEIGHTS, ENDPOSTS & CROSSPIECE, GEARS & TURNED ROD & SOME PIECES ON ELECTRO-MAGNET (.3) HAVE LACQUERED BRASS FINISH. LINK CHAIN & HANGING PULLEYS ALSO HAVE LACQUERED BRASS FINISH..2 DRUM ORIGINALLY HAD PAINTED GREY ENAMEL FINISH. BUFF COLOURED CANVAS BAG. BOX EXTERIOR PAINTED GREEN.

Décoration

S/O