Test Block Type 2
The reference test block type 2 (ISO 9934-2) is used for verification of eligibility of the feromagnetic suspension at operative testing.
The test block is permanently magnetiized and therefore there is no need to magnetize externally. The scale of the eligibility is the length of two lenghtwise indications. These indications start on the ends and they decrease towards the middle. It is evaluated (noted) the total of both lengths.
