Allbrit compensating polar planimeter
1969-1976
Allbrit fixed bar compensating polar planimeter with weighted arm
1954-1956
Allbrit radial planimeter for chart measuring
1956-1958
Allbrit sliding bar compensating polar planimeter with enclosed reading scale
1974-1976
Amsler's planimeter by Elliott
1884-1909
Polar planimeter
![Allbrit [rule-form] linear planimeter](https://coimages.sciencemuseumgroup.org.uk/340/651/large_thumbnail_smg00051742.jpg)
Allbrit [rule-form] linear planimeter
1974-1976
Large Allbrit sliding bar compensating polar planimeter for exhibition with weighted arm in wooden case
1937-1939
Allbrit fixed bar compensating polar planimeter with weighted arm
1955-1960
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
Ten test bars for use with polar planimeters
1955-1970
Model of a polar planimeter
1880-1882
Early form of Amsler planimeter c. 1856
1854-1856
Modified hatchet planimeter
1895-1899
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
Allbrit rule-form linear planimeter with magnifier and hand magnifier
1957-1959
Allbrit sliding bar compensating polar planimeter with weighted arm
1969-1971
Allbrit sliding bar compensating polar planimeter with weighted arm
1974-1976
Box containing three identical weighted arms for Allbrit compensating polar planimeters by Stanley
1955-1958
Sphere and disc planimeter by Coradi No.683 in box
Polar planimeter
Amsler planimeter by Wichmann in fitted box
Planimeter in fitted box
Planimeter, by Stanley
1901-1950
Amsler planimeter
1901-1950
Goodman's patent planimeter in fitted case
Precision disc planimeter by Coradi
Coradi planimeter and map, 1886.
1886
Parts of Wetli planimeter
1858-1862
Rolling planimeter by Coradi No.800 in box
Polar planimeter, Amsler's
1876
Coradi precision disc planimeter No. 264 in box
Wetli Planimeter
Rolling-sphere planimeter made by G. Coradi
Ashcroft averaging planimeter
1910-1920
Hatchet planimeter, by Knudsen, in case
Compensating sliding bar polar planimeter in fitted case by Uchida Yoko
1920-1950
Planimeter used at RAE in padded cell
Sang's Platometer
1851
Lippincott's planimeter 1896
1896
Coradi compensation planimeter no 28348
1920
Hatchet planimeter, in mahogany case
Harmonic analyser
Parts of an Allbrit Polar Co-ordinate Plotter (U.2352) in mahogany case by Stanley
1955-1957
Prototype Allbrit linear arm for a continuous chart planimeter model A8350 by Stanley
1971-1973
planimeter
Fixed scale polar planimeter
1840-1864