"wall"= 3mm

"width"= 80mm

"length" = 180mm

"height" = 80mm

"lid"= 30mm

"oring"= 3mm

"oring-sides"= 2mm

"hinge-ext"= 12mm

"hinge-angle"= 30

"hinge-dia"= 4.1mm

"hinge-width"= 25mm

"hinge-thickness" = "wall" + 1

"hinge-thread"= 3.3mm

"hinge-fit"= 0.2mm