Electroacoustics. Measurement microphones - Methods for determining the free-field sensitivity of working standard microphones by comparison1 Scope This part of the IEC 61094 series is applicable to working standard microphones meeting the requirements of IEC 610944. It describes methods of determining the free field sensitivity by comparison with a laboratory standard microphone or working standard microphone (where applicable) that has been calibrated according to either: IEC 610943 , IEC 610942 or IEC 610945, and where factors given in IEC TS 610947 have been applied, IEC 610946 , this

BS EN 50288-1:2013 supersedes BS EN 50288-1:2003

for use in aircraft systems at nominal operating pressure of 35 000 kPa (5 080 psi) maximum and temperature range of −54 to +135 °C (−65 to +275 °F)

where the separator has a nominal size less than 1

a) Clause 6

BS 894 discusses specification for Ubbelohde apparatus for flow and drop points

a) standards that incorporate the concept of access control

Why should you use BS EN 2869 - hexagonal slotted/castellated nuts use in aerospace industry

a) patent glazing (see BS 5516‑1):

Note 2: Fillers specifically intended for wooden and metal substrates are not covered by BS EN 16566

EN 61000-4-9

and purchasers (or the person who advises the employer) in making the necessary decisions regarding the selection

depressurisation vapour connector