2Pcs Trial Frame Clip Lens Frames Optometry Single Eye Optical Test Frame Testing Accessories Glasses Equipment Stand 40 Features: Three-layer Card Slot: The three optometry lenses can be placed at the same time, directly clamped on the flat glasses, and the angle can be adjusted manually. Comfortable to Wear: The silicone glasses temple cover is made of ABS material, which is comfortable to wear and can protect lens to reduce wear. Clear Scale: The axial position is accurate and the scale of the optical test frame is clear. Better Observation: Horizontal single eye test frame for better observation of scattered axis position. Suitable Places: The optical test frame is suitable for optometry in ophthalmic optical shops, etc. Specifications: Name: Single Eye Trial Frame Material: ABS and silicone foot cover Scale: 0-165 Card slot: three layers Net weight: about 20g Packing List Single Eye Trial Frame * 2