The Instruction Manual for the 4092 K&E Slide Rule

"K&E Log Log Duplex Slide Rules"

This is a complete scan of an early 4092 Instruction Manual. This text does not have a copyright date however it probably dates to approximately 1914. The illustration shows an all glass cursor which probably was first produced in 1914 to 1915. The 2nd page mentions a 4092 1/2 as being a smaller version of the 4092. This is the only mention of a 4092 1/2 in any K&E literature. The other remarkable feature of this text is the printing error on page 7.