Measures and records the relative humidity. Registration is done on recording charts which are stretched onto a hand wound clock drum acc. to DIN 8300 and DIN 58658 or a quartz clock work.
Delivery is effected with a set of recording charts (100 sheets) and recording pens
    Order-No.
|  | Recording time | Clock work | 
| 1.0610.xx.xxx | 1/ 7 days | Spring wound drive | 
| 1.0614.xx.xxx | 14/31 days | Spring wound drive | 
| 1.0615.xx.xxx | 1 /7/ 31 days | Quartz | 
| .10.xxx | Measuring element H (hair), accuracy  ±2%, measuring range 10…100 % rel. hum. | 
| .12.xxx | Measuring element K (synthetic fibre), accuracy ±3 %, measuring range: 0…100 % rel. hum.
 | 
| .000 | Not lockable | 
| .900 | lockable |