1.Material is piano wire 0.35 mm in diameter.

2.Twist piano wire around a 2-mm SUS round bar slowly. It is convenient if there is a lathe.

3.The spring was attached to the wire drum.

4.As compared with the old model, this is far easier to handle.

1.I begin to make it after picturing a drawing.

2.Making a main plate.I print out a part figure and I paste it to the aluminum board of 2mm with the sprayer paste and I cut it out with the jigsaw.

3.Drilling a plate, just as pasted drawing.

4.Making the protection cover. The material is the acrylic board of 2mm.

5.Shaving an end surface. It become opaque when using a file.

6.Making a part of scale.This part supports a indicator of scale.

7.Making a slide plate.tapping M3.

8.The part of aluminum and acrylics was completed.

9.Making the part which receives a slide plate by rosewood. The ditch is the depth of 2.05mm.

10.Tapping M3.

11.Making a reel for wire. The material is PVC board.

12.Drilling a 10mm.

13.Making a slot on the surface of a reel. There, a wire and a spring enter.

14.I inserted a reel in the drill of 10mm, and I pushed it by the turn center.

15.Making a hole of 2mm to put a wire to the reel.

16.Make a shaft. Tapping M4 to the circle center.

17.Drilling a 1mm. An indicator enters here.

18.Making a scale plate. The material is a beech. I cut off a fan type with outside 96mm, inside 55mm from this disk.

19.Painting to the white.

20.Riveting the jaw to the main part plate. A rivet is aluminum of 2mm.

21.Assembling the all parts on the main plate.And I tune a slider part finely.

22.Writing a scale.Because I didn't have a model,I turning a model by 5mm unit from 80 mm in diameter to 15 mm, I wrote a scale while adjusting to it.

23.The scale of the 1mm carving divided equally 5mm interval in 5 at the eye quantity. Attach an acrylic cover.

24.I exchanged at the rubber band because the spring was strong.

25.It was complete.

26.It is easy to be used because it is small.