Ray Foster Dental Equipment # 57
Benco Product # 2186-921
Product Line: 2020B - LAB - ARTICULATOR - NON-ADJUSTABLE
Has a vertical span of 1 3/4" (45 mm) when bows are parallel, while the 57A features a full 2" (51 mm) parallel clearance between upper and lower bows. Both have a rear adjustable stop. #57 Chrome