A masterpiece of precision mechanics! Highly precise eye tonometer according to Prof. Schiötz for measuring intra-ocular pressure. Its reliability and durability makes this quality measuring instrument indispensable in every ophthalmologist's practice and eye clinic. Features; High quality agate bearing for an extremely long service life Precision measurement on a scale of 0 to 20 subdivisions and 0 to -1 sub-divisions Perfect reading of the scale with red pointer All vital parts are made of stainless steel, other parts are chrome-plated Complete in a black deluxe case with velvet-look insertsAJANTA