We offer dip circle. Case: aluminium ally 120mm dia with removable windows both sides. Base: tripod base with 3 leveling screws. Horizontal scale: 125mm dia graduated clock 360° x 1° inclined scale: brass 105mm dia graduated 90° - 0 -90° x 1° magnetized needle: is 90 mm long with hard ended steel pivots working in a agate cup bearing.