It can perform addition or subtraction on the Celesthium Signals input from the back end and those from the left and right ends, and output the result. After placement, you can switch between addition and subtraction mode.
Celesthium Calculator can be crafted from Mechinery on Incomplete Crafting Table or Crafting Table.
Celesthium Crystal (3)
Mica (1)
Flamo (1)
Rock (2)