Product overview A precision metal microscope arm and focus rack designed for portable stereo microscope setups. Smooth ball bearing focus movement and coarse focus with tension adjustment provide stable, controlled positioning for detailed inspection and imaging. Key features and specifications Size: 30 mm Magnification ratio: 1500X to 3000X Material: Metal for durability and stable support Product type: Microscope arms with focus rack Theory: Stereo microscope Drawtube: Trinocular, suitable for camera attachment while retaining binocular viewing Annular ring diameter holding microscope head: 3 inches (76 mm) Opening diameter for stand post arbor: 1.25 inches (25 mm) Focus rack: Brand design with ball bearing, coarse focus, and adjustable tension Portable and handheld friendly, lightweight and easy to carry Why this product helps Stable focus and smooth movement: Ball bearing focus rack and adjustable tension reduce drift and allow precise positioning during inspection or imaging. Broad compatibility: Fits microscope heads with a 76 mm annular ring and stand posts up to 25 mm diameter. Trinocular drawtube supports simultaneous camera use without removing the eyepieces. Built to last and to carry: Metal construction offers durability for field use while the portable design makes setup and transport easy. Performance and practical benefits Precise control for magnification: Coarse focus and tension adjustment help maintain stability at magnification ratios between 1500X and 3000X. Flexible imaging workflow: Trinocular drawtube allows attachment of a camera for documentation or live viewing while preserving stereo observation. Easy integration: Designed to work with standard stereo microscope heads and stands that match the specified diameters. Typical use scenarios Electronics inspection and : Securely mount a stereo microscope head to examine circuit boards, solder joints, and component details while switching between binocular observation and camera capture. Jewelry and watchmaking: Provide stable, magnification viewing and fine focus control for setting stones, inspecting gear trains, and performing detailed assembly. Lab and quality control: Use in small laboratories, inspection stations, or production lines for component verification, sample preparation, and documentation with a trinocular camera setup. Additional information Slight color variation from product photos may occur due to monitor settings and lighting conditions. Please allow small deviations in measurements due to manual measurement. This metal microscope arm and focus rack offers precise, reliable support for stereo microscope heads, with compatibility and features designed to streamline inspection and imaging tasks in portable and bench setups.