Otto v. Guerickes manometer

International names:

Manometer, Dasymeter

Danish Instrument Inventory text:

Manometer. Otto v Guericke's (inv 1661), also called density meter. By Hauch also named "Dasymeter". A small Dia25 solid brass sphere is on a brass balance in equilibrium with a larger Dia80 hollow brass sphere. Beam L135. It is supported on a brass pillar H200 on a brass foot Dia70. To be placed under a bell jar; during evacuation the larger sphere will ascend caused by loss in buoyancy.Ref: Rosenberger 2 p 148. Cpr item 466.Not signedc1800 (g)

• Category: Air
• Hauch number: G120
• Inventory number: 1850
• Danish Instrument Inventory number: 465

• Hauch references:
• Begynd.grund: §349
• Cabinet 1: 0

• Literature:
• Sigaud de Lafond : 1,2108

• Guericke(1661);
  Erxlebens(1770), §263;
  Gehler(1787-96)
  Gehler(1825-45)