Adjustable golf club shaft and hosel assembly

1. An adjustable golf club comprising:

a shaft sleeve comprising a shaft-receiving bore and an external surface having a first reference marking;

a tubular adjustment piece comprising an external surface having a positional marking and non-parallel upper and lower surfaces, the tubular adjustment piece encircling at least a portion of the shaft sleeve; and

a golf club head comprising a hosel, the hosel comprising a hosel bore and an external surface having a second reference marking, at least part of the hosel bore having a diameter sized to receive at least a part of the shaft sleeve,

wherein when at least part of the shaft sleeve is disposed within the hosel bore, rotating the tubular adjustment piece around the shaft sleeve changes an angle of the shaft sleeve with respect to the hosel, creating a plurality of different angular settings,

wherein the first reference marking and the second reference marking create a reference frame readable by an electronic device,

wherein each angular setting correlates to a unique readable code formed by the first reference marking, the positional marking, and the second reference marking when viewed within the reference frame, and

wherein the electronic device is configured to analyze the readable code, associate the readable code with its correlated angular setting, and display the loft and lie angle of the golf club head.

2. The adjustable golf club of claim 1 , wherein the positional marking is a diagonal line that extends completely around the circumference of the tubular adjustment piece.

3. The adjustable golf club of claim 1 , wherein rotating the tubular adjustment piece around the shaft sleeve changes a first distance between the first reference marking and the positional marking within the reference frame and a second distance between the positional marking and the second reference frame, and wherein each unique readable code has a different combination of first and second distances.

4. The adjustable golf club of claim 1 , further comprising a fastener, wherein the fastener removably fixes the shaft sleeve within the hosel, and wherein tightening the fastener prevents the tubular adjustment piece from moving around the shaft sleeve.

5. The adjustable golf club of claim 1 , further comprising an indexing ring comprising a ring portion and a tang portion, wherein the ring portion encircles at least a portion of the shaft sleeve, wherein the tang portion extends away from the ring portion, wherein the tubular adjustment piece comprises an indexing feature, and wherein rotating the tubular adjustment piece causes the tang portion to make contact with the indexing feature and create a sound audible to the human ear as it moves across the indexing feature.

6. The adjustable golf club of claim 5 , wherein the indexing feature comprises a plurality of ridges and valleys, and wherein friction between the tang portion and the ridges creates the audible sound.

7. The adjustable golf club of claim 5 , wherein the indexing feature comprises a plurality of teeth and gaps, and wherein friction between the tang portion and the teeth creates the audible sound.

8. The adjustable golf club of claim 5 , wherein the indexing ring is disposed below the tubular adjustment piece.

9. The adjustable golf club of claim 8 , wherein the tang portion extends underneath the indexing feature and retains the tubular adjustment piece on the shaft sleeve when the shaft sleeve is disengaged from the hosel.

10. The adjustable golf club of claim 5 , wherein the indexing ring is permanently and non-rotatably affixed to the shaft sleeve.

11. The adjustable golf club of claim 5 , wherein the indexing ring is composed of a lightweight material.

12. The adjustable golf club of claim 11 , wherein the lightweight material is selected from the group consisting of composite, plastic, and aluminum alloy.

13. The adjustable golf club of claim 1 , wherein the electronic device is a mobile phone.

14. An adjustable consumer product comprising:

a first, movable part comprising a first line marking;

a second, movable part comprising a second line marking; and

a third, non-movable part comprising a third line marking,

wherein the first and second movable parts can be moved to adjust a setting of the consumer product,

wherein the consumer product has a plurality of different settings,

wherein adjustment of the first and second movable parts changes the configuration of the first, second, and third line markings with respect to one another,

wherein each configuration of the first, second, and third line markings forms a readable code,

wherein each of the plurality of different settings has a unique code that is readable by an electronic device, and

wherein the electronic device is configured to analyze the unique code, associate the unique code with its correlated setting, and display the setting of the consumer product.

15. The adjustable consumer product of claim 14 , wherein at least one of the first and second line marking is a diagonal line that extends completely around the circumference of the first or second movable part.

16. The adjustable consumer product of claim 14 , wherein the electronic device is a mobile phone.

17. The adjustable consumer product of claim 14 , wherein the consumer product further comprises at least one audible feedback feature.

18. The adjustable consumer product of claim 17 , wherein the at least one audible feedback feature comprises an indexing ring and at least one indexing feature.

19. The adjustable consumer product of claim 17 , wherein the at least one audible feedback feature is composed of a lightweight material.

20. The adjustable consumer product of claim 19 , wherein the lightweight material is selected from the group consisting of composite, plastic, and aluminum alloy.