Precision angular measurement/alignment on vertical axis essentially involves two intertwined vertical planes (2-axis i.e. Zx & Zy) which demand for 2-dimensional solution rather than the outdated single-axis method using Frame/Rectangular spirit vial level that could only indicates 'one axis at a time'. But, in reality, aligning one vertical axis of a plane (such as a vertical spindle shaft. e.g. Zx axis) would simultaneously change the angle on the other plane of the shaft e.g Zy axis.
Digi-Pas DWL1900XY provides measuring readings on both Zx & Zy axis simultaneously in great precision and when combined with the use of DWL1500XY on horizontal Hx & Hy axis at surface of machine work-table leveling planes, they simultaneously display measuring readings on the PERPENDICULARITY of VERTICAL against HORIZONTAL Planes, for example: Parallelism of the spindle shaft for CNC machine against its Horizontal X-Y work table surface plane (Perpendicularity).
Digi-Pas DWL-1900XY is an AFFORDABLE Wireless-Bluetooth, Dual-Axis VERTICAL Precision Digital Level designed to replace old-fashioned FRAME vial levels with a dial gauge for vertical spindle shaft parallelism checking/inspection. Users read both VERTICAL Zx & Zy axis plane and HORIZONTAL Hx & Hy axis (Surface work table) angular readings wirelessly via Bluetooth on a Smartphone screen, which effectively cuts down setup ALIGNMENT time effortlessly for precision CNC machines & Coordinate Measurement equipment, especially when used in conjunction with "Digi-Pas Smart Level" Mobile App (Free one redeemable app with each purchase) with user’s smartphone (additional option to purchase multiple app available on Apple & Android App Stores).
Digi-Pas Precision Digital Level is highly accurate, verified by 3rd parties accredited calibration labs & test bodies in US, Japan & Germany in accordance with ISO/IEC 17025:2005 and ANSI/NCSL Z540-1 standard, traceable to NIST, JIS & DIN.