or
Lactometers Combined +20/100F Calibrated At 60F - 330mm Quevenne 14/42 X 1.0 Quevenne & 1.014/1.042 X 0.001 S/G
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Lactometers Combined +20/100F Calibrated At 60F - 330mm Spence ( Ny State ) 0/120 X 1.0 Spence
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