A Konimeter Model I manufactured by Carl Zeiss, Jena with condenser, additional sample disc and dust filters in small circular box. Fitted leather case (strap missing).
The device is used to determine the dust content of the air in workshops, mills, mines, streets etc. By its use, for example, the effectiveness of a dust removing plant can be observed, or it may be determined whether the regulations of health authorities are being complied with. The konimeter can also be used to determine the type of dust.