Here you will find the replacement scales for the following measuring magnifiers: 1990-4, 1990-7. The replacement scales are only available in black for all models. The lenses are crystal clear with black graduations. Please check which magnifier you require a replacement scale for before ordering, as these cannot be exchanged. The dimensions for the replacement scale S-1990-4 is 60 x 1.76 mm and for the S-1990-7 is 43 x 1.35 mm.