Check the listing for details. Pig Back Fat Detection Equipment Farm Animals Criterion Precise Detector. Color: : Blue, Condition: New, Made in China. Listed at 503.29 USD. The thickness of the pig's back fat, the detection point, the rear rump of the sow, the distance between the last rib of the sow and the spine 50mm, and the neck of the sow. Scope of application: pigs, cattle, sheep.