Phased Array Cal Block No 3 0.75in Thick

This Phased Array Calibration Block designed by Paul Holloway of Holloway NDT & Engineering contains all of the required features of the ASME Sec V Art 4 Basic Calibration Block for non-piping applications, yet spaces the holes out on a longer, narrower block. The block contains two holes at 3/32 diameter drilled through the 1.500 width, located at 1/2T and 3/4T.This block is designed to reduce echo interference when performing a DAC/TCG calibration. The 1/2T hole is isolated from all other reflectors, while the 1/4T hole doubles as the 3/4T with the block inverted. A 75° angle has also been machined into the block ends to diminish corner reflections. As a result, the 1/2T hole signal is free of other reflection sources to sound path distances exceeding 6 inches.Dimensions: 0.750 thick x 1.50 wide x 14.00 long Design by Paul Holloway of Holloway NDT 1018 Steel, Nickel-Plated 7075-T6 Aluminum, Anodized Type 304 Stainless Steel