20026-0000 Musée des arts et métiers-CNAM (Paris France)
Suggestions & Corrections
Type:
instrument
Dimension:
L.: 22; W.: 7; H.: 6
Component's data
Thematic group:
Instruments
Type:
apparatus
Abstract:
Glass u-tube with brass connecting pieces. Brass is threaded internally. End of glass tube is neatly covered with gummed linen (?) strip, which then fits tightly into brass thread