Abstract: A dustproof counter device of a measuring wheel has a base, a counter, and a pedal setting component. The base has a component opening formed through a top of the base and a dustproof flange protruding from the base and surrounding the component opening. The counter is disposed in the base and has a zeroing button extending into the component opening of the base. The pedal setting component has a dustproof cap covering and surrounding the dustproof flange of the base, and abutting against the zeroing button. When the pedal setting component is pressed by a user's foot, dust is kept from dropping into the base by the dustproof cap.

Abstract: An automatic electronic rangefinder has a central processing unit determining whether the rangefinder is perpendicular or parallel to a horizontal plane; a ranging module electrically connected to the central processing unit to detect the distance to a first target object to be measured; an inertial sensing unit electrically connected to the central processing unit to measure the angle between the lengthwise edge of the rangefinder and the horizontal plane; and a shell covering the central processing unit. When the central processing unit determines that the rangefinder is parallel or perpendicular to the horizontal plane, the central processing unit controls the ranging module to measure the distance between the rangefinder and the first target object.

Abstract: A wheeled distance measuring device has a longitudinal pole, a housing, a wheel, a gear coupling mechanism, and a transmission assembly. The housing is attached to the longitudinal pole and has a fork. The counter is mounted in the housing and has a spindle and a gear mounted on the spindle. The wheel is mounted rotatably on the fork and has an axle and a spur gear mounted on the axle. The gear coupling mechanism is mounted on the fork and has a stem, an upper spur gear, and a lower spur gear engaged with the spur gear on the axle of the wheel. The transmission assembly is mounted on the housing and has multiple gear elements. One of the gear elements is engaged with the gear on the spindle, and another one of the gear elements is engaged with the upper spur gear.

Abstract: A surveyor wheel has an assembling seat, a supporting element, a handle, and two wheels. The assembling seat has a moving direction, an upper surface, a lower surface, and two opposite ends. The upper surface of the assembling seat and the lower surface of the assembling seat are opposite each other. The supporting element is formed on the assembling seat, protrudes downward, and has a supporting end. The handle is formed on the assembling seat. The two wheels are rotatable and are respectively connected to the two opposite ends of the assembling seat. The supporting end of the supporting element is to abut against the ground or a horizontal surface to provide support.

Abstract: A surveyor wheel has an assembling seat, a supporting element, a handle, and two wheels. The assembling seat has a moving direction, an upper surface, a lower surface, and two opposite ends. The upper surface of the assembling seat and the lower surface of the assembling seat are opposite each other. The supporting element is formed on the assembling seat, protrudes downward, and has a supporting end. The handle is formed on the assembling seat. The two wheels are rotatable and are respectively connected to the two opposite ends of the assembling seat. The supporting end of the supporting element is to abut against the ground or a horizontal surface to provide support.

Abstract: A wheeled distance measuring device has a longitudinal pole, a housing, a wheel, a gear coupling mechanism, and a transmission assembly. The housing is attached to the longitudinal pole and has a fork. The counter is mounted in the housing and has a spindle and a gear mounted on the spindle. The wheel is mounted rotatably on the fork and has an axle and a spur gear mounted on the axle. The gear coupling mechanism is mounted on the fork and has a stem, an upper spur gear, and a lower spur gear engaged with the spur gear on the axle of the wheel. The transmission assembly is mounted on the housing and has multiple gear elements. One of the gear elements is engaged with the gear on the spindle, and another one of the gear elements is engaged with the upper spur gear.

Abstract: A dual-directional laser rangefinder has a housing with two laser modules and one control module mounted therein. The laser modules emit laser beams toward both sides of the housing and receive the reflected laser beams. The control module computes respectively travel times or the phase differences for the two laser beams from the laser modules, and then computes two distances from the two ends of the housing to the two objects of interest. After adding the length of the housing, the invention obtains an actual total distance between the two objects of interest.

Abstract: A vehicle repair hand tool has a handle, a connecting rod, a connecting unit and a working unit. The connecting rod is connected with the handle. The connecting unit is connected with the connecting rod and has an engagement hole. The working unit is connected with the connector and has a base, an engagement unit and a working body. The base has a sliding recess and a recess opening formed in a bottom of the sliding recess. The engagement unit is mounted in the sliding recess and has a sliding block slidably mounted in the sliding recess. The engagement unit further has an engagement ball mounted in the recess opening, sheltered by the sliding block, and selectively engaged in the engagement hole. The working body is mounted on the base.

Abstract: A dual-directional laser rangefinder has a housing with two laser modules and one control module mounted therein. The laser modules emit laser beams toward both sides of the housing and receive the reflected laser beams. The control module computes respectively travel times or the phase differences for the two laser beams from the laser modules, and then computes two distances from the two ends of the housing to the two objects of interest. After adding the length of the housing, the invention obtains an actual total distance between the two objects of interest.

Abstract: A vehicle repair hand tool has a handle, a connecting rod, a connecting unit and a working unit. The connecting rod is connected with the handle. The connecting unit is connected with the connecting rod and has an engagement hole. The working unit is connected with the connector and has a base, an engagement unit and a working body. The base has a sliding recess and a recess opening formed in a bottom of the sliding recess. The engagement unit is mounted in the sliding recess and has a sliding block slidably mounted in the sliding recess. The engagement unit further has an engagement ball mounted in the recess opening, sheltered by the sliding block, and selectively engaged in the engagement hole. The working body is mounted on the base.

Abstract: A pivotal measuring wheel includes a handle set, a handle rod, a pivotal rod, a wheel seat, a wheel and a cable. The handle rod has a hollow handle seat and an arc-contoured first pivotal body. The first pivotal body has a first space and a first semicircular hole communicating with the first space. The pivotal rod has a hollow joint seat and an arc-contoured second pivotal body for connecting to the first pivotal body. The second pivotal body has a second space and a second semicircular hole communicating with the second space. The second space selectively communicates with the first space. The second semicircular hole selectively aligns and communicates with the first semicircular hole. The handle seat is freely pivotable relative to the joint seat without disturbing the cable.

Abstract: A warning lamp has a first assembling member, a second assembling member, a clamping space, an illuminating unit and a battery unit. The first assembling member is pervious to light and has a concave clamping section. The second assembling member is detachably and securely connected with the first assembling member and has a concave pressing section. The clamping space is formed between the pressing section and the clamping section and is capable of receiving a bar. The illuminating unit and the battery unit are securely mounted in the first assembling member. Because the second assembling member is detachably and securely connected with the first assembling member, the warning lamp can clamp different objects at different positions of the objects.

Abstract: A measuring wheel includes a handle set, a first rod, a second rod, a wheel seat and a wheel. The first rod is mounted on the handle set and has a first seat mounted on the first rod. The first seat includes a first body, a first pivotal portion and a buckling unit. The first body has an assembling groove and a supporting recess. The second rod is pivotally connected with the first rod and has a second seat assembled with the first seat. The second seat includes a second body and a second pivotal portion. The second body has a supporting block and a buckling groove defined in the supporting block. The buckling unit has an end aligning with an outer periphery of the supporting recess in the bottom surface of the first body to prevent from hitting.

Abstract: A pivotal measuring wheel includes a handle set, a handle rod, a pivotal rod, a wheel seat, a wheel and a cable. The handle rod has a hollow handle seat and an arc-contoured first pivotal body. The first pivotal body has a first space and a first semicircular hole communicating with the first space. The pivotal rod has a hollow joint seat and an arc-contoured second pivotal body for connecting to the first pivotal body. The second pivotal body has a second space and a second semicircular hole communicating with the second space. The second space selectively communicates with the first space. The second semicircular hole selectively aligns and communicates with the first semicircular hole. The handle seat is freely pivotable relative to the joint seat without disturbing the cable.

Abstract: A measuring wheel includes a handle set, a first rod, a second rod, a wheel seat and a wheel. The first rod is mounted on the handle set and has a first seat mounted on the first rod. The first seat includes a first body, a first pivotal portion and a buckling unit. The first body has an assembling groove and a supporting recess. The second rod is pivotally connected with the first rod and has a second seat assembled with the first seat. The second seat includes a second body and a second pivotal portion. The second body has a supporting block and a buckling groove defined in the supporting block. The buckling unit has an end aligning with an outer periphery of the supporting recess in the bottom surface of the first body to prevent from hitting.