Need measurment of the neck of a troodon in length.

Try this to figure it out:

Troodon Fact Sheet - EnchantedLearning.com (http://www.enchantedlearning.com/subjects/dinosaurs/facts/Troodon/)

Use math to figure out neck size --

Size: 27 metres long, with an 8 metre long neck

Weight: Around 100 pounds
Height: 2-3 feet high at hips (they would have stood head-to-head with an adult man)