Manufactured with the finest corrosion and rust resistant aerospace-grade, non-magnetic aluminum alloy, of 3/8” x 1″ (1cm x 2.5cm) bar. Class A3 tuning forks require no plating, offer optimum size and proportion, and with proper care will perform flawlessly for a lifetime.
Class A3 Riverbank aluminum tuning forks are produced from 30 to 6000 Hz and offer uncommonly long duration of audible time along with constant frequency over time.
Weighted vs. Unweighted
Specific frequency is a product of length, width, thickness and elasticity. Weighting the fork increases the mass at the ends of the prongs and lowers the frequency in a shorter and easier to use length, transferring more energy to the handle.
To maximize performance including ring time, we recommend that tuning forks at or below 256 Hz should be weighted, but tuning forks above 256 Hz should be furnished without weights.