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![0081// Estimation for Engineering Evaluation Sampling Size](https://static.wixstatic.com/media/3a6acb_7ac80460d99a4498a5ca1d3d92f87fe5~mv2.jpg/v1/fill/w_319,h_240,fp_0.50_0.50,q_90,enc_auto/3a6acb_7ac80460d99a4498a5ca1d3d92f87fe5~mv2.jpg)
0081// Estimation for Engineering Evaluation Sampling Size
27th Feb 2017 | Guan Boon, Wong Perform sampling at production site for engineering evaluation is very common daily activities...
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![0080// What is the difference between A parallel to B and B parallel to A ?](https://static.wixstatic.com/media/3a6acb_8ad09183b4524398ad0bda7df6ca5042~mv2.jpg/v1/fill/w_319,h_240,fp_0.50_0.50,q_90,enc_auto/3a6acb_8ad09183b4524398ad0bda7df6ca5042~mv2.jpg)
0080// What is the difference between A parallel to B and B parallel to A ?
In math, you can confidently say that, A parallel to B same as B parallel to A. However, in GD&T perspective, this is not the case. Why?