This is what we are looking for. Small weight is .6g and large is 1.4g. No info on string length.
A combination of split shot weights as shown below should come up with the right result. If you needed the entire weight assembly then 1 LSG weight attached to a very thin monofilament string would do the trick. I'll have to measure the line length of the small weight I have.
Split shot size Weight Shot equivalent
~~~~~~ ~~~~~ ~~~~~~~~~~~~~
3SSG --------- 4.8g -------- 6 x AAA
2SSG ----------3.2g -------- 4 x AAA
LG ------------ 3g
LSG ---------- 2g
SSG ---------- 1.6g --------- 2 x AAA
AAA ---------- 0.8g --------- 2 x BB
AB ---------- 0.6g --------- 2 x No1
BB ---------- 0.4g --------- 2 x No4
No1 ---------- 0.3g --------- 3 x No6
No3 ---------- 0.25g-------- 2 x No6
No4 ---------- 0.2g -------- 3 x No9
No5 ---------- 0.15g-------- 2 x No8
No6 ---------- 0.1g -------- 2 x No10
No8 ---------- 0.06g ------- 2 x No11
No9 ---------- 0.05g
No10 --------- 0.04g -------- 2 x No12
No11 --------- 0.03g
No12 --------- 0.02g -------- 2 x No13
No13 --------- 0.01g