The LEAST count would be Zero (0). This is not trivial. There is an established standard for what Zero actually is, as a reference point in Air.
BS EN ISO 389 (1997) "Acoustics. Standard reference zero for the calibration of pure tone air conduction audiometers"
i have an audiometer
for a levelling staff the least count is 0.01in and in m 0.005m
the least count of travelling microscope = 0.001 cm
The importance of least count ( the highest degree of accuracy of measurement) helps calculate the margin of errors when doing measurements.
0.5mm
i have an audiometer
An audiometer is an instrument that measures hearing loss. An example of a sentence using the word "audiometer" is "The geriatric hospital is outfitted with a state of the art audiometer. "
The "Audiometer" was invented by "Alexander Graham Bell"
An audiometer is an instrument used to determine the acuity - sharpness or acuteness - of hearing.
A nurse used an audiometer to test my hearing a my annual check up
around 1863
A record of a persons hearing ability obtained by a audiometer. An audiometer is an instrument used in detecting the sounds available to the human ear
least count of scale is 1mm
least count means L.C.
5 mm is the least count of theodolite.
for a levelling staff the least count is 0.01in and in m 0.005m
sound meter