Statistical Computing Devices

The Pickett N525-ES Statrule has scales for the normal probability distribution, Chi-square distribution with one degree of freedom, and 95th and 99th percentile points of the Chi-square distribution for various degrees of freedom. Front, Back
The Cumulative Binomial Probability Computer can be used to compute values of the cumulative binomial distribution. Front , Back
The General Dynamics Reliability slide rule can be used to compute values of the cumulative Poisson distribution. Front, Back There is also a circular version of this slide rule front, back.
The Ford Process Capability Slide rule can be used to compute values of the normal distribution, process capability (Cpk) values, and various values used in statistical process control. Front, Back.