天秤を描きました。

b天秤 scale

\documentclass[tikz,border=20pt]{standalone}
\usetikzlibrary{arrows.meta}
\begin{document}
\begin{tikzpicture}[scale=0.5]
%右はかり
\fill[ball color=yellow](12,-15)arc[x radius=3,y radius=3.5,
  start angle=180,end angle=360];
\draw(12,-15)arc[x radius=3,y radius=3.5,
  start angle=180,end angle=360];

\draw(18,-15)--(15,0.5)--(12,-15);
\fill[ball color=yellow!60!gray]
  (15,-15)circle[x radius=3, y radius=1.5];
\draw(15,-15)circle[x radius=3, y radius=1.5];

%左はかり
\fill[ball color=yellow](-18,-16)arc[x radius=3,y radius=3.5,
  start angle=180,end angle=360];
\draw(-18,-16)arc[x radius=3,y radius=3.5,
  start angle=180,end angle=360];

\draw(-18,-16)--(-15,-0.5)--(-12,-16);
\fill[ball color=yellow!60!gray]
  (-15,-16)circle[x radius=3, y radius=1.5];
\draw(-15,-16)circle[x radius=3, y radius=1.5];

%下の部分
\fill[ball color=yellow][rounded corners=6pt](-4.5,-29.5)
  --(-4,-27.5)--(-6,-25.5)--(-2.7,-24.5)--(0,-22.5)--(2.7,-24.5)
    --(6,-25.5)--(4,-27.5)--(4.5,-29.5)--(0,-28.5)--cycle;

\draw[rounded corners=6pt](-4.5,-29.5)--(-4,-27.5)
  --(-6,-25.5)--(-2.7,-24.5)--(0,-22.5)--(2.7,-24.5)
  --(6,-25.5)--(4,-27.5)--(4.5,-29.5)--(0,-28.5)--cycle;

\fill[ball color=yellow][rounded corners=6pt](-4.5,-29)
  --(-4,-27)--(-6,-25)--(-2.7,-24)--(0,-22)--(2.7,-24)
    --(6,-25)--(4,-27)--(4.5,-29)--(0,-28)--cycle;

\draw[rounded corners=6pt](-4.5,-29)--(-4,-27)--(-6,-25)
  --(-2.7,-24)--(0,-22)--(2.7,-24)--(6,-25)
  --(4,-27)--(4.5,-29)--(0,-28)--cycle;

\fill[ball color=yellow](-4,-28)circle(0.5);
\draw(-4,-28)circle(0.5);
\fill[ball color=yellow](4,-28)circle(0.5);
\draw(4,-28)circle(0.5);
\fill[ball color=yellow](5,-25)circle(0.5);
\draw(5,-25)circle(0.5);
\fill[ball color=yellow](-5,-25)circle(0.5);
\draw(-5,-25)circle(0.5);

\fill[ball color=yellow](0,-25.9)circle[x radius=2, y radius=1];
\draw(0,-25.9)circle[x radius=2, y radius=1];

\fill[ball color=yellow](0,-25.6)circle[x radius=2, y radius=1];
\draw(0,-25.6)circle[x radius=2, y radius=1];

\fill[ball color=yellow](0,-25.25)circle[x radius=1.25, y radius=0.75];
\draw(0,-25.25)circle[x radius=1.25, y radius=0.75];

\fill[ball color=yellow](0,-25)circle[x radius=1.25, y radius=0.75];
\draw(0,-25)circle[x radius=1.25, y radius=0.75];

\fill[ball color=yellow](0.8,-25)--(0.8,-10)--(-0.8,-10)--(-0.8,-25)
  --(-0.8,-25)arc[x radius=0.85,y radius=0.4,start angle=200,end angle=340];

\draw(0.8,-25)--(0.8,-10)--(-0.8,-10)--(-0.8,-25)
  --(-0.8,-25)arc[x radius=0.85,y radius=0.4,start angle=200,end angle=340];

\fill[ball color=yellow](0.5,0)--(0.5,-10)--(-0.5,-10)--(-0.5,0);
\draw(0.5,0)--(0.5,-10)--(-0.5,-10)--(-0.5,0);

\fill[ball color=yellow](0,-10)circle[x radius=1, y radius=0.6];
\draw(0,-10)circle[x radius=1, y radius=0.6];

%天秤の横の柱
\fill[ball color=yellow](15,0.5)circle(1);
\draw(15,0.5)circle(1);
\fill[ball color=yellow][rounded corners=8](-15,-1)
  --(15,0)--(15,1)--(-15,0)--cycle;

\draw[rounded corners=8](-15,-1)--(15,0)--(15,1)--(-15,0)--cycle;
\fill[ball color=yellow](-15,-0.5)circle(1);
\draw(-15,-0.5)circle(1);

%天秤の縦の柱
\fill[ball color=yellow](-0.25,0)--(-0.25,4)--(0.25,4)--(0.25,0);
\draw(-0.25,0)--(-0.25,4)--(0.25,4)--(0.25,0);

\fill[ball color=yellow](1.5,9.5)arc[x radius=2,y radius=2,
  start angle=100,end angle=300]
  --(1.5,9.5)arc[x radius=3,y radius=3, start angle=60,end angle=340];
\fill[white](1.5,9.5)arc[x radius=2,y radius=2, start angle=100,end angle=300];

\draw(1.5,9.5)arc[x radius=2,y radius=2, start angle=100,end angle=300];
\draw(1.5,9.5)arc[x radius=3,y radius=3, start angle=60,end angle=340];

%天秤の核
\fill[ball color=yellow](0,2.7)circle(0.5);
\draw(0,2.7)circle(0.5);

\fill[ball color=yellow](-1.6,-2.2)circle(0.5);
\draw(-1.6,-2.2)circle(0.5);


\fill[ball color=yellow](1.6,-2.2)circle(0.5);
\draw(1.6,-2.2)circle(0.5);


\fill[ball color=yellow](2.7,0.5)circle(0.5);
\draw(2.7,0.5)circle(0.5);

\fill[ball color=yellow](-2.7,0.5)circle(0.5);
\draw(-2.7,0.5)circle(0.5);

\fill[ball color=yellow][rounded corners=6](-1.4,-0.75)
  --(-2.5,0.5)--(-1,1)--(0,2.5)--(1,1)--(2.5,0.5)
  --(1.4,-0.75)--(1.5,-2)--(0,-1.25)--(-1.5,-2)--cycle;
\fill[white, opacity=0][rounded corners=6](-1.4,-0.75)
  --(-2.5,0.5)--(-1,1)--(0,2.5)--(1,1)--(2.5,0.5)
  --(1.4,-0.75)--(1.5,-2)--(0,-1.25)--(-1.5,-2)--cycle;

\draw[rounded corners=6](-1.4,-0.75)--(-2.5,0.5)
  --(-1,1)--(0,2.5)--(1,1)--(2.5,0.5)--(1.4,-0.75)
  --(1.5,-2)--(0,-1.25)--(-1.5,-2)--cycle;

\fill[ball color=yellow](0,0)circle(0.75);
\fill[white, opacity=0](0,0)circle(0.75);
\draw(0,0)circle(0.75);

\draw(0.3,-10.5)--(0.3,-25.25);

\draw(-0.3,-10.5)--(-0.3,-25.25);
\end{tikzpicture}
\end{document}