Polar planimeter, Amsler's
1876
Planimeter, by Stanley
1901-1950
Coradi planimeter and map, 1886.
1886
Allbrit compensating polar planimeter
1969-1976
Wetli Planimeter
Sang's Platometer
1851
Harmonic analyser
Allbrit fixed bar compensating polar planimeter with weighted arm
1954-1956
Amsler planimeter
1901-1950
Allbrit sliding bar compensating polar planimeter with enclosed reading scale
1974-1976
Rolling-sphere planimeter made by G. Coradi
Allbrit radial planimeter for chart measuring
1956-1958
Hatchet planimeter, in mahogany case
Amsler's planimeter by Elliott
1884-1909
Polar planimeter
Polar planimeter
Large Allbrit sliding bar compensating polar planimeter for exhibition with weighted arm in wooden case
1937-1939
![Allbrit [rule-form] linear planimeter](https://coimages.sciencemuseumgroup.org.uk/340/651/large_thumbnail_smg00051742.jpg)
Allbrit [rule-form] linear planimeter
1974-1976
Allbrit fixed bar compensating polar planimeter with weighted arm
1955-1960
Lippincott's planimeter 1896
1896
Precision disc planimeter by Coradi
Goodman's patent planimeter in fitted case
Planimeter in case
Allbrit sliding bar compensating polar planimeter with weighted arm
1946-1948
Allbrit square root radial planimeter with pivot bolt for measuring charts from Ranarex carbon dioxide recorder
1955-1957
Planimeter in fitted box
Ten test bars for use with polar planimeters
1955-1970
Early form of Amsler planimeter c. 1856
1854-1856
Ashcroft averaging planimeter
1910-1920
Amsler planimeter by Wichmann in fitted box
Model of a polar planimeter
1880-1882
Hatchet planimeter, by Knudsen, in case
Modified hatchet planimeter
1895-1899
Coradi compensation planimeter no 28348
1920
Allbrit rule-form linear planimeter with magnifier and hand magnifier
1964-1966
Allbrit fixed index compensating polar planimeter with the wrong weighted arm
1974-1976
Planimeter used at RAE in padded cell
Allbrit rule-form linear planimeter with magnifier and hand magnifier
1957-1959
Allbrit sliding bar compensating polar planimeter with weighted arm
1969-1971
Coradi precision disc planimeter No. 264 in box
Box containing three identical weighted arms for Allbrit compensating polar planimeters by Stanley
1955-1958
Allbrit sliding bar compensating polar planimeter with weighted arm
1974-1976
Rolling planimeter by Coradi No.800 in box
Parts of Wetli planimeter
1858-1862
Sphere and disc planimeter by Coradi No.683 in box
Parts of an Allbrit Polar Co-ordinate Plotter (U.2352) in mahogany case by Stanley
1955-1957
Compensating sliding bar polar planimeter in fitted case by Uchida Yoko
1920-1950
Prototype Allbrit linear arm for a continuous chart planimeter model A8350 by Stanley
1971-1973
Ott's universal planimeter
Planimeter of Oppikofer and Ernst cone-and-disc type
1848-1852