When you give up on the 'backyard' style of trying to weigh specific gravity in core over the dust bin, this could be your next upgrade.
The entire unit is constructed from stainless steel, and built to last.
Complete with the rigid weighing arm construction means the scale settle time will be massively sped up.
This is supplied is a complete ready-to-go solution: Scales, Stainless Steel Water Bath Reservoir & Core Holding Cradle. Setup and get measuring within minutes.
Check out this explainer video on how you can perform your own SG readings on site, in your own time.
Read this article to understand exactly how this weighing station works along with the explanation as to why measuring specific gravity is important in Geology.