Visibility Disc acc. to Secchi, dia. 30cm,10m stee Back Catalog number: 443593 Availability: In the manufacturer's stock Price on request - + Recommended 438123-020 Additional cost for Net Part (one single net each) Price on request 5065S-4500 Stainless Tele Rod. Up to 4m Price on request 444150 set of 24 Spare Collecting Bottles 250ml Price on request