Optical Trail Frame, Adjustable Ophthalmologist Test Frame

Features: 2 types of frames can be optional, one will be exported design, its scale is very exquisite and thin. This product is used for the optical lens track, for glasses track. Professional and with high accuracy, universal and suitable for different glasses, high quality and clear scale. Frame only, other accessories demo in the picture are not included! Specification: Main Material: Titanium Alloy Type: 1 #, 2 # (optional) Color: As the pictures show PD Range: 24-40mm (each side), 48-80mm (both total) Temple length: 98-135 mm Nose Back Height: 0-14mm Nose angle: 0-30 degrees. Axis calibration on each lens: left - 120 to 0 to 135 degrees, right - 45 to 180 to 60 degrees Lens rotation: full 360 degrees. Size: one size. Packaging: 18.5 x 9.5 x 5.5 cm (7.28 x 3.74 x 2.17 inches). Quantity: 1 piece.