Compass for the declination variations - Instrument's card

	Virtual Museum - Traversi Museum
	Instrument's card

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Compass for the declination variations

Dating

Before 1818

Maker

Paolo Lana

Web page

Compass for the declination variations

Cataloghi	Nº	Voce
Inv. 2016	405	Compass for the declination variations Provisional numbering!
Inv. 1925a	157	Vecchia bussola per la misura delle variazioni della declinazione
Inv. 1870	218	Vecchia bussola per la misura delle variazioni della declinazione
Inv. 1838	488	Bussola con ago lungo poll. 8
Inv. 1818	344	Bussola con ago lungo poll. 8

Section

Magnitostatics

Window

Conditions

Complete

Working NC

Intact

Large	19.0 cm (7.5 in)
Width	27.0 cm (10.6 in)
Height	9.0 cm (3.5 in)

Materials

brass, iron, glass, lacquer, marble

Sources

Milani G., Corso elementare di fisica e meteorologia, Editori della biblioteca utile, Milano, 1869, Vol. 8, pag. 128, fig. 42

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.