| Order Code | Shape
(Not to Scale) | Type | Description
/Application | Standard Made To | Material Size |
| V1 |  | A2
(BS) | I.I.W Calibration Standard. Calibration of Shear and compression wave probes. Checking beam angle, emergent point and resolution. Calibration of time base and gain settings. | B.S. 2704
DIN 54120
IIW (International Institute of Welding) | Steel 25x100x300mm |
| V1/50 | | A2
(BS) | Generally as V1. Thicker block minimises side wall echoes. | BS 2704 | Steel 50x100x300mm |
V2
(Specify hole diameter) |  | A4
(BS) | Small calibration block for site checking of shear wave probes, time base and gain. 1.5mm or 5mm diameter hole target | BS 2704
IOW (Institute of Welding) | Steel 12.5x43x75mm |
V2/20
(Specify hole diameter) |  | A4
(BS) | Generally as V2. Thicker block eliminates side wall echoes. 1.5mm or 5mm diameter hole target. | BS 2704 | Steel 20x43x75mm |
| BCB |  | A5
(BS) | Beam Calibration Block. Beam profile and resolution checks for shear wave probes. Sensitivity checks for shear and compression probes. 9 off 1.5mm holes. | BS 2704 | Steel 50x75x305mm |
| A6 |  | A6
(BS) | Evaluating dominant frequency, pulse, length, dead zone and resolving power for shear and compression probes as BS4331 part 3,1974. | BS 2704 | Steel 25x50x150mm |
| RTB |  | A7
(BS) | Checking shear wave probe resolution as BS4331 part 3, 1974. Steps of 2,3,4 and 5mm. | BS 2704 | Steel 74mm radius
75mm thick |
| LSW |  | SPECIAL | Ladder step wedge for timebase calibration with thickness measuring compression probes. 8 steps from 1mm to 8mm. | Tolerance of +0.000mm-
-0.040mm | Steel 8x15x120mm |
| LSW/M |  | SPECIAL | Generally as LSW with 15mm diameter steel inserts mounted in plastic. 8 steps from 1mm to 8mm. | Tolerance of +0.000mm-
-0.040mm | Steel inserts
Plastic body 10x20x140mm |
| CSW |  | SPECIAL | Curved Step wedge for timebase calibration of thickness measuring probes. 5 steps - 2,4,6,8 and 10mm. | Tolerance of +0.000mm-
-0.040mm | Steel 100mm long
x 30mm I.D.
Quadrant |
| MU |  | SPECIAL | Metric Universal Block for general purpose checking as V1 block. | Tolerance of 0.1mm | Steel 20x50x150mm |
| TBR 2 125 (3) |  | SPECIAL | Radiused test block for calibration of boiler probes. 3 off 1.5mm holes. | Tolerance of 0.004 inch | Steel 20x25x165mm |
| TBR 2 125 (5) |  | SPECIAL | As TBR 2 125(3) - supplied with 5 off 1.5mm holes | Tolerance of 0.004 inch | Steel 20x25x165mm |
| A5 Blank Type B |  | ESI | Determination of signal curve and beam characteristics of single crystal probes (longer range). 1.6mm diameter hole. | ESI 98-7 | Steel 50x75x305mm |
| A5 Blank Type C |  | ESI | Determination of signal curve and beam characteristics of single crystal probes (longer range). 1.6mm diameter hole. | ESI 98-7 | Steel 50x75x305mm |
ESI-BCB
N-A5 |  | ESI | Checking twin crystal probes for sensitivity. Contains four additional 1.5mm diameter holes to A5 block. | ESI 98-2 | Steel 50x75x305mm |
| 50 RAD |  | ESI | Checking pulse shape of shear wave probes. | ESI 98-2 and
ESI 98-8 | Steel 50x75x150mm |
ASME
(Specify Thickness) |  | ASME | Setting sensitivity levels for weld testing. Sizes and locations of flaws are dependent on weld thickness. | ASME Article 5 Fig T-546.1 | Steel Size dependent on weld thickness |
ASME/M
(Specify Thickness) |  | SPECIAL
(ASME) | Metric equivalent of ASME block. | Tolerance of 0.1mm | Steel Size dependent on weld thickness |
DAC
(Specify Thickness) |  | SPECIAL | Setting DAC characteristics for shear wave and compression wave probes. Flaws typically 1.5mm diameter holes at 20%, 40%, 60% and 80% of thickness. | Tolerance of 0.0004 inch | Steel Size dependent on product thickness |
