Visibility Disc acc. to Secchi, dia. 30cm,10m stee Back Catalog number: 443593 Availability: In the manufacturer's stock Price on request - + Recommended 438305 Telescopic Rod, Aluminium 3 x 90cm Price on request 438150/B Spare PVC Net Bucket Price on request 438931 Soft Net Bucket with Boltrope Price on request