ABSTRACT
The hinge device shown below can save time and facilitate accurate counterweighting of vertical booms. See Figures lA, lB, and 2. The device makes it possible to attach a boom to a batten, load the arbor with the batten in, and then fly the batten out. <sc>Hinge</sc> <sc>Device</sc> <sc>Closed</sc> https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9780080518565/add4c751-335b-4ee5-91d4-f532049b17e5/content/ch46_page82-01_B.tif" xmlns:xlink="https://www.w3.org/1999/xlink"/> <sc>Hinge</sc> <sc>Device</sc> <sc>Open</sc> https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9780080518565/add4c751-335b-4ee5-91d4-f532049b17e5/content/ch46_page82-02_B.tif" xmlns:xlink="https://www.w3.org/1999/xlink"/> <sc>Hinge</sc> <sc>Device</sc> <sc>Detail</sc> https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9780080518565/add4c751-335b-4ee5-91d4-f532049b17e5/content/ch46_page82-03_B.tif" xmlns:xlink="https://www.w3.org/1999/xlink"/>
