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A hygrograph uses a length of hair to record changes in air humidity.
Operating range: 0 to 100% RH at an accuracy of +/- 3% between 20 and 100% RH
It is fitted with either a quartz clock or clockwork motor.
Mechanical drum clock acc. to Din 58658
revolution cycle Model 325 day 25.6h
Electronic Quartz clock
revolution cycle Model 325Q day 25.6h
Please specify clock type when ordering.
drum material: plastic
chart paper holder material: brass nickel plate
write range 80mm for each measuring element.
60 sheets of week chart paper
2 fibre pens
Battery Mignon (AA) 1.5V (R6) (for electronic quartz clock)
Length 290 x breath 145 x height 190mm
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