The moisture scale range for paper is 4.3 to 18%, for baled paper the range is 5 to 40%, and for the reference scale it is 0 to 100. The contact pins mounted on top of the meter provide 5/16'' (0.8 cm) penetration for testing paper tubes or corrugated stock. This Electrical resistance type Moisture Meter offers three separate scales: paper, baled scrap paper and reference. The meter also features an audible out-of-range alarm, internal calibration check, 100 data point memory, and average/maximum readings.