Ads
related to: hand held gold tester digitalebay.com has been visited by 1M+ users in the past month
Search results
Results from the WOW.Com Content Network
There are many models of Gold Purity Testing machines available - from portable (light weight) to industrial grade machines. Apart from X-ray spectrometer technique, other older traditional methods are using the TouchStone and Acid to test the gold purity. But TouchStone and Acid are destructive testing - a tiny sample of gold is cut and then ...
This method has been used since ancient times. In modern times, additional tests can be done. The trace will react in different ways to specific concentrations of nitric acid or aqua regia, thereby identifying the quality of the gold: 24 karat gold is not affected but 14 karat gold will show chemical activity.
A logic probe is a low-cost hand-held test probe used for analyzing and troubleshooting the logical states (boolean 0 or 1) of a digital circuit. When many signals need to be observed or recorded simultaneously, a logic analyzer is used instead.
The first digital multimeter was manufactured in 1955 by Non Linear Systems. [15] [16] It is claimed that the first handheld digital multimeter was developed by Frank Bishop of Intron Electronics in 1977, [17] which at the time presented a major breakthrough for servicing and fault finding in the field.
The readout can be analog or digital, and modern instruments offer serial communications with a host computer or network. There is usually an option to produce audible clicks representing the number of ionization events detected. This is the distinctive sound associated with handheld or portable Geiger counters.
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
Ads
related to: hand held gold tester digitalebay.com has been visited by 1M+ users in the past month