Slope measuring system for golf shoes

A system for measuring slope comprising:

• two measuring devices, each measuring device being configured to be mounted in a recess in a sole of a shoe, wherein each measuring device comprises:
• a housing;
• an inertial sensor disposed in the housing, the inertial sensor comprising an accelerometer and a gyroscope and being configured to measure a position of the sensor;
• a serial peripheral interface connected to the accelerometer and gyroscope;
• a microcontroller connected to the serial peripheral interface;
• a power source connected to the microcontroller;
• a transmitter/receiver connected to the microcontroller and serial peripheral interface and being configured to wirelessly send data from the sensor,
• a remote receiver configured to communicate wirelessly with the transmitter/receiver in each of the sensors to receive data from each sensor and to control the microcontroller, the remote receiver having a processor programmed with software so as to be configured to calculate a slope between the two sensors based on the received data, and
• a display connected to the remote receiver and being configured to display the slope to a user.