Pic 18 b
The small wooden case measures 5,3"x 1"x
0,6". The brass coin scale spring into weighing position if the lid
will be opened. The scale use no weights because the beam has on one side
a folding weight for a 1/2 Guinea and a full Guinea. A slider show on a
graduation ( 0 to 12 ) how much Penny the coin is to light.