Hydrometer, Deluxe

For Specific Gravity Determition Of Liquids, Direct Reading Hydrometer, Shot Loaded Bulbs Joined To A Stem Graduated 0.002. Overall Length About 250Mm. Ranges More Accurately Calibrated, 0.80 To 1.00 Adjusted For Low Surface Tension, Other Ranges Adjusted For Medium Surface Tension. Ranges Available Are: (1.20 To 1.40 x 0.002)