Ideal for pencil condenser microphones, Rode StereoBar has been well thought out.
Not only has it got some handy markings for spacing measurements, there is also a guide for your 90° XY placement with cardioid microphones, plus a 110° guide for ORTF configuration.
The 5/8” mounting threads are supplied with accompanying spacing clips to allow for easy positioning for stacked arrays, and the robust ABS construction makes the Stereo Bar stable and durable, allowing it to easily support the weight of two large diaphragm microphones.