Gauges, Layout & Testing

The Brown & Sharpe (B&S) Sheet Metal Gauge (also known as the American Wire gauge, or AWG) is the American standard for ordering wire and sheet sizes. One side of this sheet metal gauge from General Tools is marked 0 to 36 in AWG sizes, while the decimal inch equivalents are marked on back. An essential tool for both jewelers and metalsmiths needing to quickly determine the thickness of sheet metal or metal wire.

A variation of standard Wide Band Finger Gauges, this set features rings with half-round surfaces on the inside. This shape makes them much easier and more comfortable to use than rings with flat shanks. US sizes 1-15 by 1/2 sizes. Rings are 7 mm wide. Made in India.

US sizes 1 to 15 by 1/2 sizes on a chain.

Nickel-plated steel gauge enables you to fit customers for all styles of bracelets. Adjusts easily to measure sizes from 5" to 9" with graduations of 1/4".

These sieve sets make it easy to sort gems by size. Each set contains 21 and 42 stainless steel plates (sieves) with progressively sized holes and a chrome sorting container. Choose from two different size containers, each with the same number and size range of plates. The container can also be used to store the sieves when not in use.

Used to scoop up loose diamonds, other gem stones, small beads, and other small parts. Small scoop is made of stainless steel and includes a ring for holding. Larger model is chrome plated.

Glass cup with stainless steel insert makes cleaning stones easy. Insert has a fine mesh bottom and small holes on the sides to allow fluid to drain while retaining small stones.

For holding stones and other small objects. Wire prongs retract into body by releasing the plunger. Available in 2-1/4" or 4-1/2" lengths. Both have 4 prongs.

These diamond sorting trays are 6" long and have individual inserts and grooves. Available in black or white.

Diamond Selector II" is a portable electronic device for distinguishing real diamonds from other simulated stones.