Index of K&E Catalogs
Planimeter Cross Reference Index

Collection of pages from K&E catalogs for the 4251 Precision Polar Disc Planimeters

Description:

The 4251 is an Precision Polar Disc Planimeter. Refer to page 336 of the 1906 catalog for a good description of the instrument.

History:

Of the catalogs available the 4251 polar disc planimeter first appeared in the 1906 catalog and was last shown in the 1936.

• 1906 -- The 4251 was first shown in the 1906 catalog.
• 1936 -- The 4251 was last shown in the 1936 catalog.

Links to catalog pages for the 4251 planimeter:

• 1906 1909 1913 1915 1921 1927 1936