Mueller 514 513 Flexhead Ratchet Spanner 13mm vendor_METCAL and RF mode turned off vendor_CHAPMAN_MANUFACTURING and RF mode turned off Frequency range 40 Hz to 1 kHz Ingress protection IEC EN 60529: IP30 with jaw closed LCD Digital reading 9999 counts Refresh rate 4 per second Operating temperature 10 °C to + 50 °C Storage temperature 20 °C to + 60 °C Operating humidity Non condensing (<10 °C) (< 50 °F) ≤90% RH (at 10 °C to 30 °C [50 °F to 86 °F]) ≤75% RH (at 30 °C to 40 °C [86 °F to 104 °F]) ≤45% RH (at 40 °C to 50 °C [104 °F to 122 °F]) (Non condensing) Operating altitude 2000 m (6561 feet) Storage altitude 12 000 m (39 Length of Mallet Head: 120mm Use in conjunction with the 506 021 Sensor Tap Kit for best results The ratcheting wrench is great for working in narrow spaces