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Comparison : Item # 4600A1, Dytran VibraCorder™ 4600A1, Three-Channel Data Logger
Item # 4401A1, Dytran VibraCorder™ II 4401A1, 5 Gravity (g) Peak Acceleration Range (±) Vibration Recorder
Item # 4401A2, Dytran VibraCorder™ II 4401A2, 16 Gravity (g) Peak Acceleration Range (±) Vibration Recorder
Item # 4400B1, Dytran VibraCorder™ 4400B1, 2 Gravity (g) Peak Acceleration Range (±) Vibration Recorder
Item # 4400B2, Dytran VibraCorder™ 4400B2, 19 Gravity (g) Peak Acceleration Range (±) Vibration Recorder