Calculating machines; Calculators; Circular slide rules; Computer bags; Computers; Cordless telephones; Eyeglasses; Instruments for measuring length; Photocopiers; Pocket calculators; Protractors; Scales; Slide-rules; Smartwatches; Spectacles; Tape recorders; Telephone apparatus; Angle dividing protractors; Folding rulers; Graduated rulers; Measuring rulers; Radiation-measuring instruments; Smart watches; Square rulers for measuring; Tape measures; Tape rulers; Tool measuring instruments