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Ref. Code: 2500.325QS
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A hygrograph uses a length of hair to record changes in humidity. It is fitted with either a quartz clock or clockwork motor, switchable between one, seven or 31 day drum rotation. Please specify clock type when ordering. Operating range: 0 to 100% RH at an accuracy of +/- 3% between 20 and 100% RH 290mm x 145mm x 190mm |