Fig. 2
From: A self-adjusting head holder without ear-bars for guinea pigs
Manufacturing the snoutpiece. a Blank. L1 and L2 represent the length (60 and 50 mm, respectively), and W1 and W2, the width (10 and 8 mm, respectively) of the top and upright bars. b Manufactured snoutpiece. 1 Distal platform that is shaped to fit the back of the guinea pig snout; 2 hole for the bolt that controls snoutpiece pressure; 3 and 4 hole and thread M3, respectively, for the bolt that connects the snoutpiece with the mouthpiece. Scale bar = 10 mm