Visibility Disc acc. to Secchi, dia. 30cm,10m stee Back Catalog number: 443593 Availability: In the manufacturer's stock Price on request - + Recommended 438123-021 Net bag Mini - protective net 300µ Price on request 5065A-2501 Telescopic Rod - 1.3m to 2.5m Price on request 438310 Hand Net acc. to Böttger, mesh size 500microns Price on request