Question about coordinates of tcpdf

Watermark, 38, GIF); the html page is marginp-top: 38pxmargin-left: 40px, but it is written in tcpd. the coordinate problem of tcpdf
It's hard to convince myself to output data one by one. don't turn it around,


$ Pdf-> Image ('./images/invoice/oxford-summer-school-logo.gif', 40, 38, '','', 'GIF ');


The html page is marginp-top: 38px margin-left: 40px.


But it was written in tcpdf, and the measurement clearly changed to a distance of more than 100 px ..


No, how accurate ??

------ Solution --------------------
Is there a measurement unit for instantiating tcpdf from time to time? The default value is mm, which is pt for your example.