/ Precision Measuring Tools / Precision Hand Tools / Calipers, Dividers & Trammels / Trammel Attachments & Accessories / C251D * Not actual product image 51211 C251D Trammel Individual Attachments Only 51211 Other similar products Starrett C251 Series Stell Beam Trammels and Attachments are rigid, well-designed trammels for layout, scribing, and measuring distances and circles. Each trammel features flattened top beam for claming and spring-friction to prevent sliding, and a knurled swivel grip for easier swinging when scribing circles. This model provides a maximum dividing range of 18", maximum circle scribing diameter range of 36" and beam size of 20". Coupling with extra 20" (600mm) Beam 20". Features Parts Contact Starrett Features Coupling, with Extra 20" (600mm) Beam (When used with C251C will scribe circle 72" [1800mm] diameter) For C251A, B, C Parts Member of Kit Item #DescriptionPart No.QtyInformation 1BEAM, EXTRA LONG16323-01 2COUPLING, #251PT990641 3•COUPLER16324-01 4•SCREW, .231-28 HEX X .219 LONG02269-02 5WRENCH #5802267-01