Link to Index of K&E Catalogs
Link to Cross Reference Index
Link to Index of K&E Collection
Link to Index of K&E Manuals

K&E 4100/4101 Family of Slide Rules

Scale set #2: 4100 (1903-1909)

R = H V = A

• 4100 --- 10" Mahogany Mannheim with no scales on edges, no B scale on back side of slide and no cursor. No serial number.

Scale set #3: 4100 (1906-1922) / 4101 (1906-1927)

R = H V = A

= B = Note: The timing of the introduction of the B scale is unknown.

• 4101 --- 20" Mahogany Mannheim with no scales on edges. No serial number.

Scale set #4: N4100 (1925-1960) / N4101 (1928-1949)

Inch / R = H HC V = A | Cm

= C B =

• N4100 --- 10" Mahogany Mannheim with scales cm and inch scale on edges. All glass cursor. Serial number 127986.
• N4100 --- 10" Mahogany Mannheim with scales cm and inch scale on edges. All glass cursor. Serial number 160651.
• N4100 --- 10" Mahogany Mannheim with scales cm and inch scale on edges. Inproved metal framed cursor. Serial number 529023.
• 4100 ----- 10" Mahogany Mannheim with scales cm and inch scale on edges. Late frame style. Serial number 964748.

• N4101 --- 20" Mahogany Mannheim with scales cm and inch scale on edges. Serial number 699920.