Model, Dummy, Scale Model
Noun and の adjective
もけい
祖父は、最初は従業員一人の小売模型店からこのビジネスを始めました。
My grandfather started his business out as a small one person plastic model retail shop.
An imitation model is obviously not the real thing. It's (usually) a plastic model or just a model figure or something.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.