How To Modify A Powder Scale for Specific Gravity Testing

Powder scales are commonly used to measure precise amounts of gunpowder when handloading firearm ammunition. These scales are very accurate and easy to use for measuring small objects, perfect qualities if you’re also working with gemstones. Gemologists can modify a powder scale for specific gravity testing, an important method for identifying gems. This article will take you through the modification and testing process step by step.

You can modify a powder scale to measure the weight of gems underwater with a simple handmade wire basket. “Powder Scale” by Arthurrh. Licensed under CC By-SA 3.0.

How To Use A Powder Scale

You can find both electronic and beam-type powder scales for sale. The beam-type RCBS Model 505, available through Amazon, is highly recommended and inexpensive. (We’ll use the beam-type scale as our example). Powder scales uses “grains” as a unit of measure. One carat equals 0.324 grains.…

Premium Article

This is a Premium Article. Please become a member to read this entire article and gain access to hundreds more like it.

Membership options