Renseignements généraux

Nº de série

609

Nº de partie

1

Nombre total de parties

11

Ou

S/O

Brevets

S/O

Description générale

PRIMARILY METAL CONSTRUCTION. GLASS OPTICS & LEVEL TUBE ON.1 STORAGE CASES ARE WOOD:.1PT &.7PT CASES HAVE METAL EXTERIOR. SEE SUPP.INFO. FOR INDIVIDUAL ASSESSMENTS

Dimensions

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

Longueur

82,0 cm

Largeur

63,0 cm

Hauteur

27,5 cm

Épaisseur

S/O

Poids

S/O

Diamètre

S/O

Volume

S/O

Lexique

Groupe

Physique

Catégorie

Géophysique

Sous-catégorie

S/O

Fabricant

Ou

Askania

Pays

Allemagne

État/province

Inconnu

Ville

Berlin-Friedenau

Contexte

Pays

Canada

État/province

Inconnu

Période

THIS BALANCE USED BETWEEN 1928-1935. THIS TYPE OF INSTRUMENT USED DURING 1920S-1930S

Canada

ONE OF TWOEOTVOS-TYPE TORSION BALANCES PURCHASED FOR JOINT USE OF DOMINION OBSERVATORY & GEOLOGICAL SURVEY. THESE INSTRUMENTS WERE AMONG THE FIRST IN CANADA. A.H. MILLER (1886-1962), USED THESE BALANCES, AND OTHER EQ. IN SOME OF THE EARLIEST GRAVITY SURVEYS AND ISOSTACY STUDIES CONDUCTED IN CANADA (REF.2) SEE ALSO 872121

Fonction

USED TO MEASURE THE GRADIENT OF GRAVITY IN A HORIZONTAL DIRECTION

Technique

TORSION BALANCE DEV'T BY BARON ROLAND VON EOTVOS OF HUNGARY, AND BECAME A MAJOR TOOL OF GEOPHYSICAL PROSPECTING IN L.1920S-E.1930S. THE ASKANIA TORSION BALANCE WAS DESIGNED TO RECORD OBSERVATIONS PHOTOGRAPHICALLY, AS WELL AS PERMITTING VISUAL OBSERVATIONS.

Notes sur la région

Inconnu

Détails

Marques

I. PLATE ON UNIT FRONT READS: 'Attention/ Observe succession/ unclamping [/ 1 at the tubes/ II at the box/ clamping]/ 1 at the box/ II turn back 1/2 rotation/ III at the tubes/ IV finally at the box.' STAMPED INTO ONE SIDE PANEL OF CASING IS: '[Askania logo]/ Askaniawerke A.G. BAMBERK Berlin-Friedenau Nr. 97687/ Made in Germany/ 609/1'. PHOTOGRAPHIC PLATEMOUNTING CONTROLS 'visualle' & 'photo'; SCALE MOUNTED BELOW BED DIVIDED 0-200 (TO CORRESPOND WITH.3-.4). TORSION WIRE BEAMS, ETC. BEAR NUMBER/LETTER DESIGNATIONS. GLASS VIAL OF TUBE LEVEL DIVIDED BY SINGLE INCREMENTS & LABELLED '0-25'

Manque

APPEARS COMPLETE, HOWEVER THE BALANCE WAS OPERATED WITHIN A PORTABLE HUT, IN ORDER TO SHIELD IT FROM WIND, TEMP., ETC. From CA of 02/05/2002 by Matthew Bruce: No - appears complete

Fini

MOST PIECES HAVE GREY ENAMEL PAINTED FINISH. EXTERIOR OF ALL CRATES AND STORAGE CASES IS GREY; STAINED & VARNISHED WOOD INTERIORS. SMALLER ACCESSORY CASES ALL STAINED & VARNISHED. .

Décoration

S/O