Fluke 51 II Digital counter meter 
Core Product Capabilities

• Sensor Compatibility: It measures contact temperature using standard J, K, T, and E-type thermocouple sensors.
• High Accuracy: Delivers laboratory-grade accuracy rated at ±(0.05% + 0.3°C).
• Wide Range: Handles temperature measurement spans from -250°C up to 1372°C depending on the thermocouple type used.
• Time Reference: Includes a relative time clock tracking MIN, MAX, and AVG cycles to pinpoint exactly when specific temperature spikes or drops occurred.
• Industrial Build: Features a splash- and dust-resistant case housed inside an impact-absorbing rubber holster