Estimated Date: 1880
Name: Beaker with glass gravinometer
Manufacturer: Whitehall Tatum Co.
Description: 5.5×2.5d lacquered tin can with label Specific Gravity Bottle and Directions, can contain a funnel and a blown flask lablelled by hand engraving 15 degrees C, 1000 grains, WT and Co. There is a compartment in the lid 1×1.25“d which is empty. According to illustration in reference this contained a counterpoise weight.
Reference 1: 243