2. Product Features
(I) Ultra-precision transmission
Using CNC machining center milling, the inner hole tolerance of the sleeve is controlled at ±0.005mm, and the clearance with the adjustment shaft is <0.01mm. There is no backlash or jamming when the handle is turned, and 0.02mm displacement adjustment is achieved, meeting the requirements of optical equipment for micron-level accuracy.
(II) Balance between lightness and strength
The model is made of aviation-grade aluminum alloy, with a density of only 2.8g/cm³, which greatly reduces the load on optical equipment; the stainless steel model has a tensile strength of more than 500MPa. Through topological optimization design, while ensuring structural strength (can withstand 5N continuous adjustment force without deformation), it is lightweight and suitable for portable optical instruments and large precision equipment.
(III) Low-interference optical design

The surface treatment process strictly controls the reflectivity (the reflectivity of the aluminum alloy model after anodizing is less than 10%, and the reflectivity of the stainless steel model after mirror polishing and matte treatment is less than 8%) to avoid the reflection of the handle during adjustment. Interference with optical observation; the material has non-magnetic properties (aluminum alloy is naturally non-magnetic, and stainless steel uses non-magnetic steel), which does not affect the magnetic field environment of the optical system.

Features	Parameters (aluminum alloy / stainless steel)
Processing accuracy	Sleeve inner hole tolerance ±0.005mm, fit clearance <0.01mm
Adjustment accuracy	0.02mm displacement adjustment
Material properties	Aluminum alloy: density 2.8g/cm³, tensile strength 300MPa+ Stainless steel: density 7.93g/cm³, tensile strength 500MPa+
Optical interference	Reflectivity <10%/<8%, no magnetic properties

3. Product Details
During the R&D stage, we collaborated with optical equipment manufacturers to simulate mechanical transmission and optical interference risks during handle operation for scenes such as microscope stage adjustment and spectrometer optical path calibration, and customized handle structure and surface treatment solutions. In the production process, we select aviation-grade raw materials, mill and turn them through a five-axis linkage machining center, and then treat the surface through anodizing (aluminum alloy) or matte polishing (stainless steel). Each batch of products is tested for dimensional accuracy by a three-coordinate measuring instrument and for reflectivity by a spectrophotometer.

The finished product is applied to scientific research microscopes to achieve micron-level displacement of the cell sample stage to facilitate precise observation; with a laser collimator, the optical path angle is fine-tuned to ensure the accuracy of laser beam alignment; in spectrometer calibration, the grating rotation is controlled to optimize the accuracy of spectral acquisition. From R&D to application, with the characteristics of ultra-precision transmission, lightweight strength balance, and low optical interference, it has become the "precision at the fingertips" of optical precision equipment, making every adjustment precisely controllable and enabling the ultimate precision of optical operations.