Large Allbrit sliding bar compensating polar planimeter for exhibition with weighted arm in wooden case 1937-1939
Box containing three identical weighted arms for Allbrit compensating polar planimeters by Stanley 1955-1958
Allbrit square root radial planimeter with pivot bolt for measuring charts from Ranarex carbon dioxide recorder 1955-1957
Planimeter, for use with steam engine indicator output recording graphs, in fitted velvet lined leatherette case, by the American Steam Gauge and Valve Manufacturing Co., Boston, USA, c. 1890. Planimeter made by the American Steam Gauge and Valve Manufacturing Co 1890
Wetli planimeter, in case, date about 1860; engraved "Patent Von Wetli & Starke No. 103" Wetli planimeter with case 1858-1862
Coradi compensating planimeter, type: CORA-Senior, serial number 1358 with case. Coradi compensating planimeter