Elektrisk lufttermometer

International names:

Electrical air thermometer; Electrisches Luftthermometer

Danish Instrument Inventory text:

Thermometer. Electrical. Kinnersley's. Mahogany base, turned Dia130. Glass pillar Dia18 H200 supporting a brass collar with a glass tube Dia52 H260. At the top is a brass cover with central brass conductor in stuffing box, ending in brass sphere inside the glass forming a spark gap with a conductor supported at the lower brass collar. The capillary is inside the glass tube and penetrating the upper brass cover sealed, thus forming communicating vessels. Outside the glass, parallel to the capillary is an ivory rod Dia7 H440 acting as scale, marked with black engraved rings at 26 mm interval (1 Danish inch) and provided with an adjustable indicator. Overall H720.Not signedc1800 (g)

• Category: Electricity
• Hauch number: K105
• Inventory number: 7512
• Danish Instrument Inventory number: 2142

• Hauch references:
• Begynd.grund: §528
• Cabinet 1: 0 47

• Literature:
• Martinus van Marum: 324
• Cataloque of Mechanical Instruments, Museo di Storia della Scienza, Firenze: 3,145

• Kinnersley(1763)
  

  Cavallo(1777) pl.II fig.3
  

  Adams(1785) pl.II fig.5
  

  Gehler(1787-96) III p.87 (pl.XVI fig.26)
  

  Gehler(1825-45) 6 p.621 (fig 100)