public double accel_zero_along, accel_zero_across, accel_zero_through;
public void set_accel_zero(double zero_along, double zero_across, double zero_through) {
public double accel_zero_along, accel_zero_across, accel_zero_through;
public void set_accel_zero(double zero_along, double zero_across, double zero_through) {