incredible tool for laboratory use or as a decoration in your laboratory more efficient at learning from experiments ..
The instrument should be handled with care, do not collide and stored after use in a cool, dry place ..
The empty box barometer is an empty crate group which axially moves when changing the air pressure ..
The tool parts consist of a head plate, a vacuum capsule, a connecting rod, an adjusting screw, an intermediate shaft, an adjuster, a sector gear, a spur gear, an eccentric screw, a spiral, a pointer and a dial and a fastening screw ..
Suitable for use in schools, educational displays and collectibles, is also a great addition to your laboratory supplies.
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*Due to manual measurement, there may be some errors, please allow 1-17cm difference, thank you