1/2 in EMT Phone Scan Stand Base
This is a U-shaped desk base that turns an offcut of 1/2 in EMT conduit (17.9 mm OD) and a clamp-on phone holder into an overhead document-scanning stand. The 170 x 170 mm footprint has a paper-stop lip and screw holes for #8 screws (4.5 mm). The 45 mm socket has an 18.4 mm bore with gusset ribs on both sides, and the post is locked by an M4 thumbscrew threaded into a brass heat-set insert (5.5 mm bore).
desk document-scanner emt-conduit phone-stand