Here’s my vote:
Replaces a roughly $5k piece of equipment.
Used for performing semen analysis and to calculate the dilution amounts of extender needed to create insemination doses at a particular motile sperm per dose.
Been watching the system in action as the USDA researcher we’ve worked with on sheep reproduction is using our place as his lab for some poultry work he’s doing in the area.
I can’t really think how I’d use it but it’s a cool device.