Abstract: Thermal ion sensors are useful for taking in situ measurements of the plasma structure in ionospheric science events such as auroral arcs. By deploying these sensors on a sounding rocket and multiple small ejectable sub-payloads, simultaneous multipoint measurements can be collected, which capture the spatial and temporal variation in plasma dynamics. This thesis details the redesign of a reproducible, low-resource instrumentation package for deployment on multipoint sensorcraft arrays. This instrumentation package provides power, attitude data, digitization, measurement timing and telemetry for two thermal ion sensors. Each instrumentation package stack consists of an Arduino Uno, a custom printed circuit board (PCB) shield, and a commercial inertial measurement unit (IMU). This hardware and software platform provides a basic instrumentation interface which can be altered for different mission criteria. Testing and integration procedures were developed for the redesigned package, which were implemented throughout the fabrication of 29 devices. This design, fabrication and integration process culminated in the production of packages for deployment on four different NASA sounding rocket missions. Results will be presented from the use of these devices on the 2019 test flight launch of SubTec 8 out of Wallops, VA.