Aortic punches tip conical is designed for use by cardiac surgeons during coronary artery bypass grafting procedures to create an opening in the wall of the vessel. All punches are sterile and disposable for efficiency and patient safety.

Apex Locator is an electronic device used in endodontics to determine the length of the root canal space. An apex locator is the only tool for finding the location of the apical foramen, which is usually not at the anatomical apex. The apex locator readout locates the apex or apical foramen and the apical constriction.

Apochromatic refractors utilize a lens as its objective to form an image. It uses either multiple-lens designs or lenses made of other types of glass (such as fluorite) to prevent chromatic aberration. These are available with objectives of up to 553 mm in diameter, but most are between 80 and 152 mm.

Applanation tonometer is used for measuring a patient's intraocular pressure by applying an applanating pressure to the cornea of the patient's eye. It estimates IOP by measuring the force that is required to flatten a constant area of the corneal surface or by measuring the surface area that is flattened by a predetermined force.