Good practice guides - NPL - NPLWebsite
Our good practice guides are a practical and informative series of documents designed to meet the needs of industry. They are a user-friendly way to find out about what to measure, how to measure it and how to understand the results.
All good practice guides - NPL - NPLWebsite
Our Good Practice Guides are informative documents created to help individuals and organisations improve their technical knowledge. Download our most recent and popular guides free of charge.
There are six guiding principles to good measurement practice that have been defined by NPL. They are: The Right Measurements: Measurements should only be made to satisfy agreed and well-specified requirements. The Right Tools: Measurements should be made using equipment and methods that have been demonstrated to be fit for purpose.
NPL is the UK’s National Measurement Institute, and is a world-leading centre of excellence in developing and applying the most accurate measurement standards, science and technology available.
CMM measurement strategies GPG41 - NPL - NPLWebsite
2014年10月20日 · metrology practice when using CMMs with CAD data to inspect parts. This guide covers the selection of the number of measurement points when using Co-ordinate Measuring Machines and gives advice on the compromise between accuracy and speed.
There are six guiding principles to good measurement practice that have been defined by NPL. They are: The Right Measurements: Measurements should only be made to satisfy agreed and well-specified requirements. The Right Tools: Measurements should be made using equipment and methods that have been demonstrated to be fit for purpose.
In the 1940s and 1950s, NPL was involved in drafting a special series of Specifications of Accuracy that covered a wide range of precision measuring apparatus. This series has been built on first hand experience gained in the design and construction of prototype measuring equipment at NPL and in the design and
Type: A machine for measuring the pitch of screw threads based on NPL design (NPL Drawing No. 1547). Capacity: 150 mm (6 in) diameter x 230 mm (9 in) length. Notes: (i) All measurements refer to the basic temperature of 20°C. (ii) Where reference is made to hardness a minimum HV of 800 is required, apart from the centres, see clause 3.1.
Type: A Level Comparator based on NPL design as shown on NPL Drawing Nos. 341, 344, 447, 530, 532, 533, 534, 539 and Sketch No. 606. Note: Any proposed modification to the design which is likely to affect the functioning or accuracy of the instrument shall be submitted in advance to the Laboratory for approval. LIMITING VALUE OR MAXIMUM
1. NPL语言简介 — NPL 0.1.0 documentation - zhiyuan-rtd-test2 ...
NPL（Neural Parallel Language）是神经元并行语言的缩写，是大富网络技术有限公司开发的一种新的编程语言，语法上和Lua 100%兼容。NPL的设计理念类似人类神经元的结构，将复杂计算分解到节点，简洁高效，特别适合于分布式计算、大型网络应用，3D图形渲染等。
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