Multifunction layout tool

Multifunction, multipurpose construction tool

Multifunctional drawing implement box

Multifunctional measuring and layout tool

Multiple-purpose measuring instrument

Multipurpose square

Nail clipper with measuring gauge

Navigation position plotter

Navigational aid device

Navigational aid device for determining direction in a chart

Navigational aid for use with a map, chart, or the like

Navigational calculating device

Navigational calculating device

Navigational instrument

Navigational plotter

Non-slip sewing ruler

Non-slip sewing ruler

Non-spill chalk line and measured refill cartridge

Orientation apparatus for planar-surface-mounted items

Orthographic to axonometric plotting apparatus