Looking at a previous post https://www.gimp-forum.net/Thread-Using-...8#pid30338 and the ruler that shows a canvas size about 570 pixels.
Now the clock face is 240 pixels. Half the size. Smaller image, so you zoom in and pixels are more noticeable. Scaling an image does not scale a pixel, a pixel remains a pixel, it just reduces the number of pixels. Go back to the larger image.
Now the clock face is 240 pixels. Half the size. Smaller image, so you zoom in and pixels are more noticeable. Scaling an image does not scale a pixel, a pixel remains a pixel, it just reduces the number of pixels. Go back to the larger image.