Abstract: There is provided an inside-diameter measuring unit capable of automating inside-diameter measurement and a control method for automatic inside-diameter measurement. An inside-diameter measuring part is supported by a support frame part via a floating joint part. The floating joint part includes a rotation-allowing mechanism part and a translation-allowing mechanism part. A measuring head part of the inside-diameter measuring part is inserted into a hole by a robot arm part. The inside-diameter measuring part adjusts its position and posture autonomously by the reaction force when a contact point pushes against the inner wall of the hole to align the axis of the inside-diameter measuring part with the axis of the hole. An electric inside-diameter measuring unit can automatically measure the inside diameter of a hole.

Abstract: There is provided an inside-diameter measuring unit capable of automating inside-diameter measurement and a control method for automatic inside-diameter measurement. An inside-diameter measuring part is supported by a support frame part via a floating joint part. The floating joint part includes a rotation-allowing mechanism part and a translation-allowing mechanism part. A measuring head part of the inside-diameter measuring part is inserted into a hole by a robot arm part. The inside-diameter measuring part adjusts its position and posture autonomously by the reaction force when a contact point pushes against the inner wall of the hole to align the axis of the inside-diameter measuring part with the axis of the hole. An electric inside-diameter measuring unit can automatically measure the inside diameter of a hole.

Abstract: There is provided a display panel module unit having a narrow frame suitable for a display unit of a small-sized measuring apparatus. A panel module unit includes a first panel part, a second panel part, and an intermediate cover housed in a housing part in order from a front side to a rear side. The housing part includes an annular side wall and at least one fixing means attached on an inner peripheral surface of the side wall, and the fixing means is a means for fixing a position of the intermediate cover in the housing part. The second panel part is housed between the first panel part and the intermediate cover, and a position of the second panel part is indirectly fixed by the intermediate cover. The second panel part is provided with a biasing means for biasing the first panel part from the rear side toward the front side.

Abstract: There is provided a display panel module unit having a narrow frame suitable for a display unit of a small-sized measuring apparatus. A panel module unit includes a first panel part, a second panel part, and an intermediate cover housed in a housing part in order from a front side to a rear side. The housing part includes an annular side wall and at least one fixing means attached on an inner peripheral surface of the side wall, and the fixing means is a means for fixing a position of the intermediate cover in the housing part. The second panel part is housed between the first panel part and the intermediate cover, and a position of the second panel part is indirectly fixed by the intermediate cover. The second panel part is provided with a biasing means for biasing the first panel part from the rear side toward the front side.