The "6x14h" designation refers to a bitmap font where each character fits within a bounding box of 6 pixels wide by 14 pixels high. The 'h' often stands for "height" or "high-resolution" in some legacy documentation.
Problem: Bitmap fonts do not scale. Your display has an unusual DPI.
Solution: Use setfont with the -m mirror option or integer scaling: setfont 12x28.psf (which is 2x scaling of 6x14).
The 6x14h font is a small, monospaced bitmap font commonly used in: font 6x14h library download install
This guide shows how to obtain and install the 6x14h font for system use or developer integration.
Check console font:
showconsolefont
Check X11 font:
xfontsel
Or use fc-list:
fc-list : family | grep -i fixed
If “6x14h library” means a C/C++ header file containing font bitmaps for direct use in graphics projects: