The Grain Sampling Spear is a tool designed for collect grain samples from stored bulk 
grain.
To use the spear, it is inserted into the grain in the closed position.
The internal chambers are then opened by rotating the handle, allowing grain samples to 
enter. 
The chambers are closed again before the spear is removed, ensuring an accurate sample is
collected.
This specially designed tip and sampling openings help prevent grains from being cracked 
or damaged during the sampling process.
The spear is constructed from two anodized aluminium tubes and resistant to corrosion.