Renseignements généraux

Nº de série

309989

Nº de partie

1

Nombre total de parties

1

Ou

S/O

Brevets

S/O

Description générale

Wood (walnut) case/ bakelite/ leather/ metal, dry cell battery

Dimensions

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

Longueur

22,9 cm

Largeur

25,4 cm

Hauteur

17,2 cm

Épaisseur

S/O

Poids

S/O

Diamètre

S/O

Volume

S/O

Lexique

Groupe

Physique

Catégorie

Thermique et conductibilité thermique

Sous-catégorie

S/O

Fabricant

Ou

Brown Instrument

Pays

United States of America

État/province

Pennsylvania

Ville

Philadelphia

Contexte

Pays

Inconnu

État/province

Inconnu

Période

Inconnu

Canada

In 1930 Minneapolis-Honeywell established a subsidiary in Toronto, Canada where, since 1915, small inroads had been made with distributors for Minneapolis Heat Regulator Company thermostats. The company was founded in 1857 in Philadelphia by Edward Brown, inventor of the first pyrometer of American design. The Brown Instrument name has been retired. In 1934 Minneapolis-Honeywell bought Brown Instrument's assets for $2.3 million. The Brown Instrument name survived until 1949, at which point it became Philadelphia Division.

Fonction

: "This potentiometer has been designed primarily for checking pyrometers and thermocouples although it can be used for many other purposes requiring a sensitive potentiometer. It can also be used as a measured source of EMF for checking recording potentiometers of self-balancing type." Laboratory Equipment for Chemistry, Metallurgy, Physiology. Chicago Apparatus Co. Catalogue 45 SCIEN C5329 3002 1936 (Copy in supp info)

Technique

Until Edward Brown had invented the carbon-rod pyrometer in the mid-nineteenth century, there was no accurate way to measure the extremely high temperatures in foundries and kilns.

Notes sur la région

Inconnu

Détails

Marques

On the lower gauge between 4 & 5 'MODEL #1117', between 6 & 7 'S/N 309989'. Mfr's plate reads 'The Brown Instrument Co./Philedelphia, PA/Made in USA'

Manque

From CA of 11/19/2001 by David Daley: No - Complete

Fini

Built into a walnut wood case with the top as hinged lid/ when lid is open, top is black bakelite with black bakelite knob/ 4 selector knobs, 2 throw switches, 4 capped posts & 2 gauges/ the lower gauge is marked from 1 to 11 by 1's/ case has a leather handle in front and a snap lock for lid/ it has a metal clip under the lid

Décoration

S/O