I'd say about 2-5 inches.
There are 2000 different scorpions from 1/2 inch to 7 inches in length.
An average couch is about average length
Scorpions do not have a single species, but are an entire order of arthropods. The Arizona bark scorpion, for example is of the species Centruroides sculpturatus; and the largest scorpion is the Hadogenes troglodytes (at 20 cm in length).
The average length of a vehicle is 17feet
The collective nouns are a bed of scorpions, a colony of scorpions, or a nest of scorpions.
The average length of a ruler is 12 inches.
Scorpions make good lizard food. There are many predators to scorpions, birds, cats, mice, rats, even humans in certain locations eat scorpions. So lizards eat scorpions, spiders eat scorpions, scorpions eat scorpions and people eat scorpions. I'm sure pocket mice eat scorpions!
For adult females, the average step length is about 26 inches and the average stride length is around 52 inches. For adult males, the average step length is 31 inches and the average stride is 62 inches.
That is the correct spelling of the plural noun "scorpions."
The average step length is taken as 30 inches.
The average length of a moose is 2.5 to 2.7 metres.