Please read the following table in HTML format from a webpage and then answer the question in detail according to the table. Each table cell is defined by a <td> and a </td> tag. Each table row starts with a <tr> and ends with a </tr> tag. 'rowspan=m' and 'colspan=n' represents a cell spaning over 'm' rows and 'n' columns.

Webpage title:
Digit (unit)
Table title:
Ancient Egypt
Table:
<table id='hittask' contenteditable='False'>
<tr> <th colspan=1 rowspan=1 > Name </th><th colspan=1 rowspan=1 > Egyptian name </th><th colspan=1 rowspan=1 > Equivalent Egyptian values </th><th colspan=1 rowspan=1 > Metric equivalent </th></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Royal cubit </td><td colspan=1 rowspan=1 > meh niswt </td><td colspan=1 rowspan=1 > 7 palms or 28 digits </td><td class="highlighted"  colspan=1 rowspan=1 > 525 mm </td></tr>
<tr> <td colspan=1 rowspan=1 > Fist </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 6 digits </td><td colspan=1 rowspan=1 > 108 mm </td></tr>
<tr> <td colspan=1 rowspan=1 > Hand </td><td colspan=1 rowspan=1 >  </td><td colspan=1 rowspan=1 > 5 digits </td><td colspan=1 rowspan=1 > 94 mm </td></tr>
<tr> <td colspan=1 rowspan=1 > Palm </td><td colspan=1 rowspan=1 > shesep </td><td colspan=1 rowspan=1 > 4 digits </td><td colspan=1 rowspan=1 > 75 mm </td></tr>
<tr> <td class="highlighted"  colspan=1 rowspan=1 > Digit </td><td colspan=1 rowspan=1 > djeba </td><td colspan=1 rowspan=1 > 1/4 palm </td><td class="highlighted"  colspan=1 rowspan=1 > 19 mm </td></tr>
</table>
Question:
What is the metric equivalent for the royal cubit and digit?
Answer:
The royal cubit measured 525 mm and the ancient Egyptian digit was 19 mm.