An iron-type golf club and a method of creating the iron-type golf club including the steps of forming a club head blank having a blank loft, a blank head weight of 345-400 grams, and an external sacrificial region having an ESR thickness, an ESR sole portion, an ESR face portion, and an ESR leading edge portion. A finished club head is formed having a finished club head weight of less than 310 grams by machining off an ESR removed mass from at least a portion of the external sacrificial region including at least a portion of the ESR sole portion, a portion of the ESR face portion, and a portion of the ESR leading edge portion.

An address direction guiding apparatus includes: an azimuth sensor configured to measure an azimuth; a light output unit configured to output light; and a control unit configured to control the light output unit to output light differently depending on an angle between a target azimuth and the azimuth measured by the azimuth sensor.

A blade measuring apparatus (21) to measure the radius and bend of skate blades along the longitudinal plane of the skate blade runner features a one-piece frame (1), thermally non-conductive handles (5), and adjustable, replaceable, and interchangeable magnetic force application components (9, 10) and assemblies.

A measurement device (100) for a golf course green comprises: a distance measurement unit (30) having a pair of laser transmitter/receivers (32) for emitting a pair of laser beams (L; L1, L2), for distance measurement, outwardly at a predetermined emission angle with respect to the forward direction (CEN); a control unit (50) for generating hole-cup position information and hole-cup gradient information from an arithmetic operation of data on the distance measured by the pair of laser transmitter/receivers (32) of the distance measurement unit (30) and data on the emission angle; and an output unit (60) provided outside a casing (10) so as to output the hole-cup position information and hole-cup gradient information generated by the control unit (50).

An apparatus for measuring loft and lie of a golf club head with better accuracy is disclosed herein. More specifically, the present invention discloses an apparatus that utilizes a high precision camera that focuses on the striking face portion of the golf club head, working in conjunctions with encoders near the shaft portion of a golf club head, to instantaneously provide precision measurement of the loft and lie of the golf club head and feedback to the operator in order to allow for more precision adjustment to the loft and lie of the golf club head.

An iron-type golf club having selectively machined portions and attributes, including a machined sole portion and/or a machined leading edge portion. The machined portion(s) include continuous machining scallop lines having a scallop height and a step-over distance.

The invention provides a device for testing internal pressure of a hollow sports ball; the device comprising: (i) a main body (2); (ii) a removable cap (4); the main body (2) and cap (4) each being provided with mutually engaging formations (12, 14) that enable the main body (2) and cap (4) to be removably secured together by a twisting movement; (iii) a load cell (46) and associated electronic circuitry for processing an output from the load cell (46); and (iv) an electronic display (41) linked to the electronic circuitry for displaying an indicator of the internal pressure of the ball; the main body having an interior void which, together with the removable cap, forms an enclosed ball-receiving chamber for receiving the ball; the interior void of the main body being provided at an inner end thereof with a seat (44) on which the ball can sit, the load cell (46) being disposed beneath the seat (44); and the associated electronic circuitry optionally being disposed below the pressure sensor; whereby the ball-receiving chamber is configured such that when the ball is in place in the chamber, the securing together of the main body and cap brings the main body and cap together in an axial direction to compress the ball and apply a pressure through the ball to the load cell, and a force signal sent from the load cell to the associated electronic circuitry is processed to enable the indicator of the internal pressure of the ball to be displayed.

A shoe pod includes a positioning component and an altimeter. The positioning component determines geodetic locations of the shoe, whereas the altimeter determines elevations of the shoe. A golf club pod is disposed at the golf club and includes a golf club parameter detector operable to be detachably fastened to the golf club, to detect a golf club head striking surface position and to transmit the detected club parameter signal based on the detected golf club parameter.

A tool which incorporates separated dual-impression pads for measuring the Ischial Tuberosity width of a cyclist more accurately since these dual-impression pads match the newer saddles designs. The accuracy of the measurement is further increased by heavy ferrous balls that indefinitely hold the impressions to give the bike fitter enough time to make an accurate Ischial Tuberosity width measurement. The accuracy of the saddle selection is further increased due to the detachable/portable measurement caliper which can be taken out to the saddles being considered.

A system including a computing device and camera is disclosed; the system configured for measuring three-dimensional attributes and associated performance measurements of a mechanical device. Some embodiments comprise a camera configured to capture images of the mechanical device and a computing device in communication with the camera. In some embodiments, the computing device is configured to access a first set of pixels associated with a first plurality of fiducials to calibrate a spatial resolution of the camera. A second image from the camera can be converted into a second set of pixels associated with each of the plurality of fiducials, which are attached to the mechanical device. The computing device can be further configured to compare the first and second set of pixels to determine the location of the plurality of fiducials on the mechanical device.