This standard specifies the classification and naming, requirements, test methods, inspection rules and marking, packaging, transportation and storage of tuning forks with natural frequencies of 256Hz and 512Hz and resonant tuning forks with natural frequency of 440Hz. This standard applies to tuning forks with resonance boxes for physical experiments, but does not apply to electric vibrating tuning forks.
JY/T 0395-2007 Referenced Document
GB/T 191 Packaging.Pictorial marking for handling of goods*, 2008-04-01 Update
GB/T 1931 Method for determination of moisture content of wood*, 2009-02-23 Update
GB/T 6881.2-2002 Acoustics--Determination of sound power levels of noise soures--Engineering methods for small,movable sources in reverberant field--Part 1: Comparsion method for hard-walled test rooms
JY 0001 General quality requirements for educational equipment products
JY 0002-2003 Testing regulations for educational equipment products
JY 0026 Methods of type designation for producets of teaching instrument and equipment
JY 0213-1994 Environment specification of tronsterence tore and tert for the mechanics heat teaching instrumentr