Standard reference zero for the calibration of pure tone air conduction audiometers Specification a standard at frequencies intermediate between those given in Parts 5 and 6 BS 2497
€165.00
Acoustics. Reference zero for the calibration of audiometric equipment Specification a standard reference using an artificial ear complying with BS 4669
Standard reference zero for the calibration of pure tone air conduction audiometers Specification a standard using an acoustic coupler complying with BS 4668
Characteristics and calibration of hydrophones for operation in the frequency range 0.5 MHz to 15 MHz
€231.00
Integrating-averaging sound level meters; identical with IEC 60804, edition 1985
€63.27
Acoustics. Reference zero for the calibration of pure tone audiometers by air conduction.
€47.00
Hearing aids Methods for measurement of characteristics hearing with bone vibrator output
€193.00
Hearing aids; measurement of electroacoustical characteristics; identical with IEC 60118-0, edition 1983
€77.20
Occluded-ear simulator for the Measurement of earphones coupled to the ear by ear inserts; identical with IEC 60711, edition 1981
€48.79
Hearing aids. Part 10: Guide to hearing aid standards
Sclaes and sizes for plotting frequency characteristics and polar diagrams; identical with IEC 60263:1982
€41.78
Specification for integrating-averaging sound level meters
€269.00
Specification for sound level meters for the measurement of noise emitted by motor vehicles
OCCLUDED-EAR SIMULATOR FOR THE MEASUREMENT OF EARPHONES COUPLED TO THE EAR BY EAR INSERTS
€56.00
Hearing aids Characteristics of electrical input circuits for hearing
€81.00
