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Curtis Industries IIW Type 1 Calibration block

IIW Type 1 calibration block per the International Institute of Welding (IIW) and ASTM E164. Features a 4″ radius on one end, a 1″ radius cut out at the bottom as well as 2.0″ diameter holes and more. 12.000″x4.000″x1.000″ – 12lb. Please specify desired measuring units: Imperial or Metric.

Type 1:

QXX-5034: Calibration block IIW type 1, steel 1018, with wood case and certificate.
QXX-5034A: Calibration block IIW type 1, 7075 aluminum, with wood case and certificate.
QXX-5036: Calibration block IIW type 1, 304 stainless, with wood case and certificate.

Type 2:

QXX-5038: Calibration block IIW type 2, steel 1018, with wood case and certificate.
QXX-5038A: Calibration block IIW type 2, 7075 aluminum, with wood case and certificate.
QXX-5040: Calibration block IIW type 2, 304 stainless, with wood case and certificate.