Specific gravity measuring device

A specific gravity measuring device comprising:

• a liquid bath containing a liquid having known specific gravity;
• measuring object mounting means disposed within said liquid bath for mounting a measuring object in a condition sinking in said liquid;
• first measuring means for directly receiving weight of said liquid bath and deriving a buoyancy indicative value representative of buoyancy of said measuring object on the basis of a weight increase when said measuring object is placed on said measuring object mounting means and known specific gravity of said liquid;
• second measuring means for supporting said measuring object mounting means, directly receiving weight of said measuring object mounting means and said measuring object as placed on the former and deriving a weight in liquid indicative value representative of weight of said measuring object in liquid;
• arithmetic means for receiving said buoyancy indicative value and said weight in liquid indicative value for deriving a specific gravity indicative value representative of specific gravity of said measuring object;
• and
• display means for displaying said specific gravity indicative value.

A specific gravity measuring device comprising:

• a liquid bath containing a liquid having known specific gravity;
• measuring object mounting means disposed within said liquid bath for mounting a measuring object in a condition sinking in said liquid;
• first measuring means for directly receiving weight of said liquid bath and deriving a liquid bath weight indicative value representative of a liquid bath weight;
• second measuring means for supporting said measuring object mounting means, directly receiving weight of said measuring object mounting means and said measuring object as placed on the former and deriving a weight in liquid indicative value representative of weight of said measuring object in liquid;
• arithmetic means for receiving said liquid bath indicative value and said weight in liquid indicative value for deriving a buoyancy indicative value on the basis of variation of said liquid bath weight indicative values before and after mounting said measuring object on said measuring object mounting means and said known specific gravity of said liquid, and further deriving a specific gravity indicative value representative of specific gravity of said measuring object on the basis of said buoyancy indicative value and said weight in liquid indicative value;
• and
• display means for displaying said specific gravity indicative value.