Other surveying and hydrographic instruments: dumpy levels or engineers levels that measure height differences on construction sites.

State magnification and accuracy; pack in cases with tripod. Measuring and survey instruments are precision goods: pack in padded cases with silica gel, state accuracy class, range and resolution, provide calibration certificates traceable to national standards, CE/BIS marks for electronic units, and keep lithium batteries under dangerous goods rules; some navigation and geophysical instruments are export controlled.