How to extract a visible scatterplot matrix from Rstudio when you have many variables?

Question

I'm doing the chemical analysis and trying to make a scatterplot matrix based on my chemistry data. I was able to create a matrix that I wanted but each scatterplot is not visible enough to read on my screen. I am planning to print this matrix on a huge scientific poster, however, I don't know how am I going to export this matrix with visible plots. Are there any ways that I can get these plots visible? I used this code for a matrix:

scatterFull <- pairs(springwater[,1:53], panel=panel.smooth)

Here is a matrix that I got in a plot box from Rstudio. I know the monitor screen size matters which is why I am not able to see each plot clearly but is there a way to figure this out without changing monitor size?

I want to see this matrix visible as much as the matrix below (this matrix contains only 10 elements but I need all of 53 elements in my matrix).

Please help me with this problem. Thank you!