Foxboro Planimeter

Aus der Patentschrift US1650490

1 Gerätedaten

2 Beschreibung

Beschreibung......: This is a particular radial planimeter. Instruments of this kind was designed to determine the average radius of an irregular curve. Foxboro planimeter provides an instrument adapted to determine not the average radius of the curve, but the average of some function of the radius as, for instance, the square root.
Besonderheiten....:
Varianten.........:
Konstrukteur*.....: Brown, Willis C. and Spink, Leland K...
Designer..........:

3 Literatur

4 Patente

 siehe blauer Kasten unten

• Patent:...
  

5 Weblinks

6 Seriennummern

• Seriennummern: 1077(1945), 1767, 2066(1953)
  

sellling years are written in documents attached to planimeters

• Nummernlagen:
  

7 Allgemeine Anmerkungen

Foxboro Planimeter (SN. 1077 ; Celli)

Foxboro Planimeter (Celli)

Foxboro Planimeter (Celli)

Seite eröffnet von:

On February 2010 a quite identical was sold on Ebay, just a more 'modern' behavior. Published photos allowed to read "Made in Switzerland" and the serial number (1767).

Patente:

• Patent:US1314463 26.08.1919 Bristol, Edgar H. Foxboro Co. : Planimeter
• Patent:US1650490 22.11.1927 Brown, Willis C. and Spink, Leland K. Foxboro Co. of Foxboro (MA) : Planimeter