Dasqua Dasqua 400 x 250 x 60mm grade a granite surface plate. This granite plate will remain free from deterioration and dimensional change over time. Accuracy is ±0001". There will be minimal changes in dimension due to extreme temperature changes. Meets DIN876. Well designed and durable high precision tool. For measuring tasks, layout work, touching up and lapping precision parts. Easy to use for mounting mechanical and electronic gauges. Non-magnetic and non-conductive. 100% corrosion proof. Note that this plate is not NIST traceable.