Navships Test Block

Used for distance amplitude correction, sensitivity levels and flaw depth information.

From: $759.00


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Product Information

Contains six 3/64″ diameter side-drilled through-holes at distances of .25″ to 2.75″ in .25″ increments. MTDs are engraved near both scan edges on one face. In accordance with MIL-STD-271G Figure 9, and NAVSHIPS Specification 0900-006-3010/Section 6. Also known as a “Mare Island block.” This block is surface ground to a 32 Ra finish on all surfaces, and the steel version is nickel-plated.

  • Dimensions: 12.000″ x 3.000″ x 1.250″
  • Also available: a Navy version (3020 block) with rougher scanning surfaces (125 to 250 Ra max), and an extra hole at .125″ MTD.
  • Optional Hardwood Case available

Metric Versions available.

Looking for a Block made from an exotic alloy?  You’ve come to the right place!  If you don’t see what you need, please contact us!

We can offer many Steels (Carbon and Alloy), Stainless Steels, Nickel Alloys, Titanium Alloys, Aluminum Alloys, Copper Alloys, Cast Irons, Zirconium and others!


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