Microscope Parts Lot AS-IS Nikon Focus Block Phototube Head Fiber Optic Flex

Microscope Parts Lot AS-IS Nikon Focus Block Phototube Head Fiber Optic Flex

This is a mixed lot of used microscope parts and accessories sold AS-IS for parts or repair. Items include fiber optic flex light cables, phototube and binocular microscope heads, eyepiece tube sections, a Nikon focus block, and a zoom mechanism. Every component has at least one known defect as described below — buyers should review the full photo set carefully before purchasing. This lot is intended for technicians sourcing repair parts or salvaging optics and hardware for microscope restoration.

Specifications & What's Included

• Fiber optic light source flex cable — gray, 42mm inner diameter ring mount; broken fiber optic housing but still passes light
• Fiber optic light source flex cable — black, 38mm inner diameter ring mount; loose ring mount connection, still passes light
• Video/phototube head with 0/100 or 80/20 viewport ratio selection
• Microscope binocular head — eyepiece tube: 30mm diameter × 55mm deep; cracked optic (visible in photos); zoom knobs broken
• Black eyepiece tube section — 30mm diameter × 30mm deep; broken mounting section
• Nikon focus block — right coarse focus knob does not adjust height; head mount port approx. 53mm diameter; accepts 24mm diameter mounting post
• Microscope head zoom mechanism — 0.8x to 3.5x range
• Additional fiber optic flex cables visible in photos (blue/silver armored and short black flex)
• NOT INCLUDED: The Carl Zeiss 47 50 61 f=100 microscope objective shown in the photo set is excluded from this lot

Applications

Microscope parts lots like this are commonly sourced by lab technicians, microscope repair specialists, and researchers who need specific components to restore or modify existing instruments. Fiber optic ring light cables and flex light guides are used with a wide range of stereo and compound microscopes to provide controllable, shadow-free illumination — a common choice in semiconductor inspection, electronics assembly, biological dissection, and materials analysis. Phototube and video tube adapters allow camera or imaging device attachment to a microscope's optical path, with selectable beam-splitting ratios (such as 80/20 or 0/100) determining how much light is directed to the eyepieces versus the camera. Nikon focus blocks and binocular heads from this era were used across Nikon's SMZ and Optiphot series microscopes, among others. Zoom mechanisms in the 0.8x–3.5x range are typical of Nikon and similar-era stereo zoom microscopes used widely in industrial and life-science labs from the 1970s through the 1990s.