A Plethora of Planimeters!

	Polar planimeters
	Variations on polar planimeters Robertson and Willis planimeters Amsler's spherical planimeter
	Linear planimeters
	Prytz planimeters and variations
	Pre-Amsler planimeters Maxwell's planimeter: truly ingenious!
	Integrators that measure centroids and moments of inertia in addition to area
	Planimeters that measure other things

Search for planimeters on eBay!

Lasico still makes planimeters.

Robert L. Foote
Last update: 29 November 2004