The G.R.A.S. RA0058 is a dimension adapter which increases the diameter of a 1/2" microphone to 1". The adapter is relevant for use with G.R.A.S. 45CA Hearing-protector test fixture or in other situations where a 1/2" microphone is to be mounted in a 1" inner diameter hole/cylinder.
The adapter has an outer thread (23.11-60 UNS-2) for a 1" protection grid.G.R.A.S. RA0157 and an inner thread (12.70-60 UNS-2) for the 1/2" microphone (remove the grid).
Note 1: This product is not for G.R.A.S. RA0113 IEC 60126 2cc Coupler for 1'' mic. (use RA0116 instead).
Note 2: This product is not for G.R.A.S. RA0075 NBS 9A Coupler (use RA0077 or RA0116 with protection grid GR0490 instead).
Quality & Warranty
G.R.A.S. accessories are made of stainless steel, alloys and high-quality composites. These items are covered by a 2 year warranty respecting their intended use.
On consumables like batteries, cables and windscreen we offer a 6 month warranty.