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DeFelsko STDP4 | P4 Certified Polystyrene Blocks | 1.5 to 6.5 mm
Part Number : STDP4
Spanning 1.5 mm to 6.5 mm (60 to 250 mils), the DeFelsko STDP4 P4 certified polystyrene blocks provide four reference thicknesses for checking gauges that measure above 1500 µm (60 mils). Block labels show ultrasonic velocity so they can be used with ultrasonic gauges too.
Key features
- Block values (approx.): 1.5 mm (60 mils), 2.5 mm (100 mils), 4.5 mm (185 mils) and 6.5 mm (250 mils)
- Accuracy: ±(2.5 µm + 0.05% of thickness) / ±(0.1 mil + 0.05% of thickness)
- Block size: 38 x 70 mm (1.5 x 2.75 in)
- Ultrasonic velocity shown on the labels
- Four blocks in a rugged acrylic storage box
- Certificate of Calibration traceable to NIST or PTB
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