Mathematical Instruments

Proportional Dividers Type Bürgi

Proebster Proportional Dividers	Riefler Proportional Dividers

Proportional Dividers	Proportional Dividers	Proportional Dividers

Proportional Dividers Type Sector

Sector

Curvimeter

Mechanical Curvimeter	Mechanical Curvimeter	ADAC Mechanical Curvimeter	Freiberger Mechanical Curvimeter	Mechanical Curvimeter	Mechanical Curvimeter

HC-HB Paris Mechanical Curvimeter	HC-HB Paris Mechanical Curvimeter	HC-HB Paris Mechanical Curvimeter	HC-HB Paris Mechanical Curvimeter	HC-HB Paris Mechanical Curvimeter	HC-HB Paris Mechanical Curvimeter

Electronic Curvimeter

Planimeter

Polar Planimeter American Steam Gauge & Valve Mfg. Co.	Compensating Polar Planimeter Aristo	Compensating Polar Planimeter Bruning	Compensating Polar Planimeter H. Morin Type D

Harp Planimeter Nestler	Linear Planimeter A. Ott Typ 90	Compensating Polar Planimeter A. Ott	Compensating Polar Planimeter Reiss

Compensating Polar Planimeter Reiss	Compensating Polar Planimeter Gebr. Wichmann	Compensating Polar Planimeter (Russia)	Polar Planimeter