3" Black Pinhole Screen with 0.6mm Aperture Item Type_Animal Model Zinc die-cast body with non-toxic

Zinc die-cast body with non-toxic powder coating mounts vinyl-coated four-prong jaws on a 5

Transmitter and receiver pair on PP3 batteries with 5m and 10m polymer fiber coils

each plain-shanked for clamping or holding

Double-walled in aluminum to minimize heat exchange with the surrounding air

Pack of 100 microhematocrit capillary tubes measures 100mm with 1

3" Black Pinhole Screen with 0.6mm Aperture Item Type_Animal Model Zinc die-cast body with non-toxicBlack 3 inch circular disc 0. 25 inches thick with a 0. 6mm central pinhole, mounted to a total length of 4. 6 inches for clean pinhole imaging and diffraction studies.