146 Darton Hygrograph Chart

Darton Chart No. 146 is a hygrograph chart designed for recording relative humidity over a 24-hour period. Printed in green and measuring 304mm x 90mm, each pack contains 100 charts, providing a year's worth of monitoring.

Traditional non-adhesive hygrograph charts ideal for recording drums that have a clip to hold the chart in place. If your drum recorder does not have a clip we suggest using our chart tape to hold the sheets in place.