Features:1. Rotating platform enables fine adjustment of the angle.2. Go to the approximate location of the platform, use coarse or fine tuning switch screws, can be used to fine-tune differential head.3. Made of aluminium alloy material with black anodized surface, it is durable.4. Precision machining and stable performance, good using effect.5. Widely used in production machinery, testing equipment, optical experimental measurement, fine-tuning displacement, precision positioning, quantitative movement and so on.Specification:Condition: 100% Brand NewItem Type: Manual Rotation StageModel: SEMR160-ARTable Diameter: Approx. 160mm / 6.3inTable Thickness: Approx. 30mm / 1.2inCentimeter Card Accuracy: 0.01mmMovement Amount: Coarse 360 degrees, Fretting 5 degreesConcentricity: 30umLoad resistance: 392.4NMaterial: Aluminum Alloy (Black Anodized)Package List:1 * Manual Rotation StageNote:1. Please allow 1-2mm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.