Doctor's Kontron Tunnel Sensor

A handheld diagnostic panel with a narrow viewing corridor, its interface glowing faintly as it feeds sensor data into the console. The Doctor clutches it during the violent transit, knuckles white against the strain of reading the Kontron tunnel’s shifting spacetime distortions. Peri watches its amber readouts flash warnings about temporal shear, the only visible gauge of their descent into the unknown. Its compact casing hums with forced urgency, translating cosmic instability into terms a Time Lord can act upon.