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
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