T4000 Series Industrial Trackball
3.0" Panel Mount Trackballs & Trackball Mouse Pointers
Features:
3.0" (76mm) Trackball (very high density proprietary mineral material)
MIL-HDBK-217F Rating (MTBF > 100,000 hours)
MIL-STD-810G (Humudity/Fungus/Salt Spray Conformance)
MIL-STD-901D (Shock Conformance)
MIL-STD-167-1 (Vibration Conformance)
MIL-STD-461F (Electro-Magnetic Conformance)