Feature: 1. Made of aluminum alloy, light in weight, friction‑resistant and silent, scratch‑resistant and drop‑proof. 2. Gear rotating handle control, dovetail grooves type guide rail, high load resistance and stable movement. 3. With R angle safety protection, easy to carry and store, convenient to use and with good performance. 4. Suitable for optical equipment, measuring devices, semiconductor manufacturing equipment, testing machines, microscopes and others. 5. Small size, easy to carry and store, convenient to use and with good performance. Specification: Item Type: Z Axis Dovetail Manual Trimming PlatformModel: HFL-A40 Platform Size: Approx. 40 x 40mm / 1.6 x 1.6in Moving Direction: One direction of Z axis (vertical direction) Body Material: Aluminum alloy (black anodized) Movement Method: Rotating gears and rotating handle to advance Sliding Track: Gear guide Rail Type: Dovetail grooves type Number of Countertop Threaded Holes: 10 Threaded Hole Diameter: Approx. 4mm / 0.16in Threaded Hole Depth: Approx. 6mm / 0.2in Withstand Load: 29.4N (3Kgf) Up and Down Movement Stroke: ± Approx. 10mm / 0.4in Minimum Scale: 0.01mm Parallelism: 20μm Moving Parallelism: ≤0.01mm/13mm Scope of Application: Optical equipment, measuring devices, semiconductor manufacturing equipment, testing machines, microscopes, transporters and others. Package List: 1 x Z Axis Dovetail Manual Trimming Platform