The trigons coincide precisely with the planetary tone frequencies. Their precision of ± 0.5 % lies within the normal deviation caused by temperature differences.
In contrast to tuning forks, the triangle plates create a loud spacial sound. A wooden sphere serves as both a handle and striking tool.
The triangle plates are available in three variations: natural bronze, polished bronze and nickel silver (an alloy comprising copper, nickel and zinc, also known as alpaca silver). The difference in sound between the materials is negligible.
They are delivered in a noble black cardboard box or as a set of 13 notes in a wooden box. Accessories available include a table stand with a wooden or Baltic sea stone base, wall mount and clapper.
Striking the middle of the triangle creates a uniform, lingering sound, whereas striking the triangle near the edge makes it rotate creating a lingering, undulating sound.