These barograph instructions are facsimile pages of an original Negretti & Zambra leaflet c1910 with directions for setting up self-recording barometers (barographs), both Bourdon tube pattern thermometers and spiral coil thermometers (thermographs), and other self-recording instruments.

Image of page 1 of original leaflet: Directions for setting in action Negretti & Zambra's Self-Recording Barometers, Thermometers, etc" c1910  Image of page 2 of original leaflet: Directions for setting in action Negretti & Zambra's Self-Recording Barometers, Thermometers, etc" c1910

 

Stock No: BK0649