Losmandy offers this 4"-long V-Series Dovetail Plate to support their Secondary Mounting System, which allows dual-mounting of smaller OTAs and accessories on their heavy-duty mounts. The plate is configured with a smaller Vixen-style dovetail, and made out of a lightweight and durable aluminum alloy with a scratch-resistant black anodized finish. This version of the plate has pre-drilled holes set at common intervals, with three 1/4"-20 drilled and tapped mounting holes. A laser-engraved scale on the side clearly denotes half-inch increments with whole numbers marked.