This is a bracket to mount the Andonstar AD246 or AD249 digital microscope to an InnoGear Microphone articulating arm which has a 3/8 threaded fixing point. I have included the step file in case anyone wants to do a mod.
Link to the articulating arm: https://www.amazon.co.uk/InnoGear-Microphone-Professional-Recording-Equipment/dp/B07Z1C5GKS/ref=sr_1_5?crid=1BDLMW3MJQF1E&keywords=innogear+microphone+arm&qid=1695807287&sprefix=InnoGear%2Caps%2C223&sr=8-5