weighing 
machine, balance, scales, measure, weighbridge 
gauge, 
ruler, rule, measure, balance, scales 
gradation, 
hierarchy, gamut, tier, band, ratio, progression, calibration, 
measurement 
level, 
size, degree, extent, amount, magnitude, dimension, range 
deposit, 
crust, fur, covering, plaque, tartar 
plate, 
flake, skin, scab, piece