anchor.diff:  
   	var/list/modes = list(MODE_NONE = MODE_MESON, MODE_MESON = MODE_TRAY, MODE_TRAY = MODE_RAD, MODE_RAD = MODE_NONE)
   	var/mode = MODE_NONE
  -	var/range = 6
  +	var/range = 1
   
   /obj/item/clothing/glasses/meson/engine/prescription
   	name = "prescription engineering scanner goggles"
  
positive.code: 	icon_state = "trayson-shuttle"
  	item_state = "trayson-shuttle"
  	desc = "Used to see the boundaries of shuttle regions."
  
  	modes = list(MODE_NONE = MODE_SHUTTLE, MODE_SHUTTLE = MODE_NONE)
  
  #undef MODE_NONE
  
negative.code: 	item_state = "trayson-t-ray"
  	desc = "Used by engineering staff to see underfloor objects such as cables and pipes."
  	range = 2
  	modes = list(MODE_NONE = MODE_TRAY, MODE_TRAY = MODE_NONE)
  
  /obj/item/clothing/glasses/meson/engine/tray/prescription
  