NASA Hardware - Apollo Launch Tower Gantry TOPS Communications Box Channel Control Knob.

This artifact was removed from a BLUE NASA Apollo Launch Tower Communications Box Complex 39.

NASA Kennedy Space Center sold these artifacts back in the early 1990's where I purchased them.

This Knob is made from a durable Black Anodized Aluminum Alloy.

The basic measurements are:  1.3125 inches high by 1.125 inches wide by 0.75 inches deep.

*The last photo is for REFERENCE only.  It illustrates the construction.*