Rheostat Nº 940 - Instrument's card

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Rheostat Nº 940

Dating

30 May 1941

Maker

Angelo Cattaneo

The rheostat is a variable resistance which has numerous applications in electrodynamic (from the simple elongation of an electric circuit till in carrying out special measures). As it apparents from a tag, this model of wire potentiometer is characterized by a maximum current intensity of 0.3A and a maximum resistance of 1200Ω.

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Rheostat Nº 940

Cataloghi	Nº	Voce
Inv. 2016	575	Rheostat Nº 940 Provisional numbering!
Inv. 1870	940	Reostato a cursore 0,3 amperes 1200 Homs [sic]

Section

Electrodynamics

Window

Non esposto

Conditions

Complete

Working NC

Intact

Large	34.0 cm (13.4 in)
Width	9.0 cm (3.5 in)
Height	10.0 cm (3.9 in)

Materials

Sources

Galileo Officine, Apparecchi per l'insegnamento della fisica, Officine Galileo, Firenze, 1929, pag. 195, fig. 5470
Resti E., Catalogo generale di apparecchi per l'insegnamento della fisica, Ditta Emilio Resti di Franco Brambilla, Pubblicazi, Milano, 1930, pag. 88, fig. 434
Tarquini A., Apparecchi di fisica, Antonio Tarquini, Roma, 1928, pag. 126, fig. 30687

The additional indications which integrate the items of the conservation's state have the following meaning: (?) = maybe complete; M = maintenance; P = partial; R = restored; D = used for teaching; NC = not checked; X = impossible to verify.

In order to avoid that instruments' cards without the english description text of the device be directly selected, I added a special filter with which only the complete cards are shown in the menu. Anyhow all the partial english instruments' cards (with instrument's dating, dimensions, state of conservation...) can always be seen even if they haven't the english description text. To read this uncomplete cards is sufficient to click, for example, on an instrument's picture or on the word "View" of the table column called "Card" every time they appear in the other pages of this database.