In addition to other aspects disclosed, a caliper is configured to measure at least one physical dimension. The caliper has a display configured to present a first representation and a second representation of a measurement provided by the caliper. The format of the first representation is different from the format of the second representation, and the first representation is approximately simultaneously displayed with the second representation.

Disclosed is an electronic scale ruler, having a scale ruler main body, a main control board, an input, a display screen, a light source, a vernier base, and a distance conversion assembly. The scale ruler main body has an outer edge side. The light source is mounted on the outer edge side of the scale ruler main body, having a plurality of light beads and being capable of displaying scale. The vernier base is removably mounted on the outer edge side of the scale ruler main body, being capable of moving along a length direction of the outer edge side of the scale ruler main body. The distance conversion assembly is configured to calculate a movement of the vernier base from an origin on the outer edge side of the scale ruler main body.

There is provided a connection unit for connecting an external device to a measurement device. Connection units 600 and 700 each include a flat plate shaped connection unit main part 610, a connector terminal 651 for measurement device provided at the connection unit main part 610 and connected to a signal inputting/outputting connection port 110 or 210 corresponding to each of measurement devices 100 to 400, and a connector terminal 660 for external device provided at the connection unit main part 610 and connected to a signal inputting/outputting connection port 511 of each of external devices 510 to 540. The connection unit main part 610 is further provided with a manually operable switch.

A device configured to provide a faster and more accurate measurement of depths of holes for placement of bone screws and fastener for bone implant fixation procedures. The device includes a combination of a bone probe for physical examination of a hole drilled in a bone and a depth gauge member for determining a depth of the hole and providing digital measurement of the depth via a display on the instrument and/or via a wireless exchange of measurement data to a remote computing device, such as a tablet or smartphone. The device may further be connected to a separate neuromonitoring device and be used for nerve sensing and/or nerve stimulation by way of the bone probe. For example, the bone probe may include a conductive material such that the distal probe tip acts as an extension of the neuromonitoring device and may be used to sense and/or stimulate nerves.

A device configured to provide a faster and more accurate measurement of depths of holes for placement of bone screws and fastener for bone implant fixation procedures. The device includes a combination of a bone probe for physical examination of a hole drilled in a bone and a depth gauge member for determining a depth of the hole and providing digital measurement of the depth via a display on the instrument and/or via a wireless exchange of measurement data to a remote computing device, such as a tablet or smartphone. The device may further be connected to a separate neuromonitoring device and be used for nerve sensing and/or nerve stimulation by way of the bone probe. For example, the bone probe may include a conductive material such that the distal probe tip acts as an extension of the neuromonitoring device and may be used to sense and/or stimulate nerves.

Computerized Caliper consists of measuring bar with fixed jaw, moving frame with moving jaw and a measurement and computer block. Measurement and computer block installed on the moving frame comprises digital measurement device of a vernier caliper, a computer, to which a temperature transmitter is connected, and a photo-camera.

A device configured to provide a faster and more accurate measurement of depths of holes for placement of bone screws and fastener for bone implant fixation procedures. The device includes a combination of a bone probe for physical examination of a hole drilled in a bone and a depth gauge member for determining a depth of the hole and providing digital measurement of the depth via a display on the instrument and/or via a wireless exchange of measurement data to a remote computing device, such as a tablet or smartphone. The device may further be connected to a separate neuromonitoring device and be used for nerve sensing and/or nerve stimulation by way of the bone probe. For example, the bone probe may include a conductive material such that the distal probe tip acts as an extension of the neuromonitoring device and may be used to sense and/or stimulate nerves.

A device configured to provide a faster and more accurate measurement of depths of holes for placement of bone screws and fastener for bone implant fixation procedures. The device includes a combination of a bone probe for physical examination of a hole drilled in a bone and a depth gauge member for determining a depth of the hole and providing digital measurement of the depth via a display on the instrument and/or via a wireless exchange of measurement data to a remote computing device, such as a tablet or smartphone. The device may further be connected to a separate neuromonitoring device and be used for nerve sensing and/or nerve stimulation by way of the bone probe. For example, the bone probe may include a conductive material such that the distal probe tip acts as an extension of the neuromonitoring device and may be used to sense and/or stimulate nerves.

A digital measurement instrument with excellent environmental durability and at least a conventional level of usability including a main scale, a slider movable relative to the main scale, a displacement sensor configured to detect displacement or position of the slider in relation to the main scale, and a control circuit. The control circuit controls change between a normal measuring mode and an origin setting mode. The control circuit also sets and stores a first area, the first area being a preset predetermined range outside of a measurement range. The control circuit also changes operation mode from the normal measuring mode to the origin setting mode when the slider is detected to have stopped within the first area for a consecutive predetermined period of time. Additionally, the digital calipers are provided with no mechanical push button switches.

A data transmission module is provided as a battery-less accessory for attachment to portable metrology devices (e.g., handheld digital calipers, micrometers, indicators, etc.). Rather than utilizing battery resources from the metrology devices, the data transmission module utilizes energy harvested wirelessly from a remote data node (e.g., a computer system, display, etc.) to power transmission of measurement data signals to the remote data node. The data transmission module may receive sufficient power when relatively close to the remote data node, such as when a user is near the remote data node when operating the metrology device to obtain dimensional measurements of a workpiece. A wireless data generator of the data transmission module may be configured to wirelessly communicate measurement data signals using: the harvested energy; or a modulated reflection of, or coupling to, a received energy supply field from the remote data node; or a combination thereof.