The BESTO Vertical Reading Microscope consists of a microscope with rack focussing adjustment, mounted horizontally on an adjustable vertical column. The stereotyped design of the vertical column moving through 15cm by rack & pinion is now replaced by a superior quality vertical pillar carrying the scale with the entire 15cm vertical lift by smooth rack & pinion, moving inside a heavy vertical column carrying the brass vernier. Vernier spring is loaded for precise opposition to the scale. A guide slot and key ensure up & down movement in the same plane.
The stainless steel scale & vernier is machine divided to accuracy within ±0.01% or better.
The horizontal microscope tube is mounted on the vertical column and is adjustable by smooth rack & pinion, through twin-knobs on both sides. The microscope moves on the machined inter ground guides.