As nouns the difference between stethoscope and scale
is that stethoscope
is stethoscope (medical instrument) while scale
is (obsolete) a ladder; a series of steps; a means of ascending or scale
can be part of an overlapping arrangement of many small, flat and hard pieces of keratin covering the skin of an animal, particularly a fish or reptile or scale
can be a device to measure mass or weight.
As a verb scale is
to change the size of something whilst maintaining proportion; especially to change a process in order to produce much larger amounts of the final product or scale
can be to remove the scales of.