<div dir="ltr">In the case of engineering drawings, "Datum" is defined as a reference point, line, plane, or surface. In this instance, the plural is "Datums." When GD&T (Geometric Dimensioning and Tolerancing) notation is used, Datum Symbols are used to call out how the part is to be jigged for inspection, eliminating a lot of inconsistencies.<div><br></div><div>This message brought to you by the Draftspersons Advocacy Council.</div><div><br></div><div>Tim (CAD Geek to the Stars) Servo </div><div class="gmail_extra"><div><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr">---<br>"Imagination is more important than knowledge." - Albert Einstein<br><br><br><br></div></div><div dir="ltr"><br></div></div></div></div>
<br><div class="gmail_quote">On Sun, Jul 22, 2018 at 6:09 PM, Justin Herrmann <span dir="ltr"><<a href="mailto:ebn303afxcut@email.com" target="_blank">ebn303afxcut@email.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div><div style="word-break:break-word"><div class="m_4861838632974798974mail_android_message" style="line-height:1;padding:0.5em">The plural of datum is data.<br>
</div><div><div class="h5"><div class="m_4861838632974798974mail_android_quote" style="line-height:1;padding:0.3em">On 07/22/2018, 8:05 PM Tim Parkhurst <<a href="mailto:tim.parkhurst@gmail.com" target="_blank">tim.parkhurst@gmail.com</a>> wrote:<blockquote class="gmail_quote" style="margin:0.8ex 0pt 0pt 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
<div dir="ltr">Agreed. <div><br></div><div>Question: is the plural of datum "datem" or "datums"?<div><br></div><div><br></div><div><br></div><div>Tim (professional designer/drafter: I have a shirt that says "Live to Draft, Draft to Live.") Servo</div><div class="gmail_extra"><div><div class="m_4861838632974798974gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr">---<br>"Imagination is more important than knowledge." - Albert Einstein<br><br><br><br></div></div></div></div></div>
<br><div class="gmail_quote">On Sun, Jul 22, 2018 at 5:53 PM, Tim Ressel <span dir="ltr"><<a href="mailto:timr@circuitabbey.com" target="_blank">timr@circuitabbey.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Drawings with no called out datem.<span class="m_4861838632974798974HOEnZb"><font color="#888888"><br>
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-- <br>
--Tim Ressel<br>
Circuit Abbey<br>
<a href="mailto:timr@circuitabbey.com" target="_blank">timr@circuitabbey.com</a><br>
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