Instruments for measuring length; Length measuring gauges; Measuring apparatus, namely, angle finders; Bubble levels; Carpenters' rules; Surveying instruments; Slide rules; Graduated rulers; Protractors; Folding rulers; Carpenters' folding rules; Marking gauges for joinery purposes; Carpenter's levels; Squares for measuring; Square rulers for measuring; Straight edge graduated rulers; Laser level measuring apparatus; Contour gauges; Measuring rulers; Calipers for measuring trees