Abstract: In a measuring instrument that measures a length using a measure, the measure including a plurality of row patterns arranged in a length direction, each of the row patterns having a plurality of patterns arranged in a width direction, one of binary values being assigned to each of the plurality of patterns, the measuring instrument includes a first reader configured to read a first row pattern, a second reader configured to read a second row pattern away from the first row pattern by a predetermined row, and a generator configured to generate a code that is a multi-digit pattern obtained by adding the second row pattern read by the second reader to the first row pattern read by the first reader.

Abstract: An operation device includes: a first substrate on which a wiring pattern is formed; an input unit that is mountable on the first substrate, and includes a member to be operated, a first wireless communication module that outputs a signal in accordance with operation of the member to be operated, and a first terminal that contacts the wiring pattern and supplies a power source to the first wireless communication module; and a position defining member that defines a position of the input unit on the first substrate.

Abstract: A key-switch includes a keycap configured to be pressed down, a base member, and a link mechanism disposed between the keycap and the base member and configured to support the keycap such that the keycap is movable up and down relative to the base member, wherein the link mechanism includes four links arranged in a rectangular shape, and each of the links includes a sliding part configured to slide on the base member, a mounting part attached to the keycap, and joints connecting adjacent links among the four links together.

Abstract: A key-switch includes a keycap configured to be pressed down, a base member, and a link mechanism disposed between the keycap and the base member and configured to support the keycap such that the keycap is movable up and down relative to the base member, wherein the link mechanism includes four links arranged in a rectangular shape, and each of the links includes a sliding part configured to slide on the base member, a mounting part attached to the keycap, and joints connecting adjacent links among the four links together.

Abstract: An operation device includes: a first substrate on which a wiring pattern is formed; an input unit that is mountable on the first substrate, and includes a member to be operated, a first wireless communication module that outputs a signal in accordance with operation of the member to be operated, and a first terminal that contacts the wiring pattern and supplies a power source to the first wireless communication module; and a position defining member that defines a positon of the input unit on the first substrate.

Abstract: A key switch device and a keyboard, capable of preventing key-entry noise from rebounding and having a drip-proof effect so as to avoid a contact fault and/or insulation failure. The key switch device includes a switch panel; a key top positioned above the switch panel; a pair of link members positioned between the key top and the switch panel and adapted to interlock with the key top so that the key top may be moved in a vertical direction while maintaining a horizontal posture; and an annular elastic wall member positioned between the switch panel and a membrane sheet and configured to contact opposing surfaces of the switch panel and the membrane sheet, wherein the elastic wall member is arranged along a contour of the key top.

Abstract: A key switch device and a keyboard, capable of preventing key-entry noise from rebounding and having a drip-proof effect so as to avoid a contact fault and/or insulation failure. The key switch device includes a switch panel; a key top positioned above the switch panel; a pair of link members positioned between the key top and the switch panel and adapted to interlock with the key top so that the key top may be moved in a vertical direction while maintaining a horizontal posture; and an annular elastic wall member positioned between the switch panel and a membrane sheet and configured to contact opposing surfaces of the switch panel and the membrane sheet, wherein the elastic wall member is arranged along a contour of the key top.