Odd Engravings are items in killer7. They are found in every single mission except Target06: Lion.

Odd Engravings are strange objects typically required to unlock security systems and gain access to new areas. They are found throughout the game, often in unusual locations. Although each Engraving is unique, they are all similar in that they have a silvery-grey, metallic appearance. They are often highly ornate and intricately detailed; conversely, their only purpose is to be slotted into dull, ordinary-looking panels and machines in order to allow the Smiths to access the mechanism inside.

	Angel	Coat of Arms - Celtic Building This is found in Room 212 after completing the candlestick puzzle with the Fire Ring. It is used to move the library shelves on the 3rd floor.
	Angel	Rectangle - Celtic Building This is found in the laundry room after completing the toilet puzzle on the 3rd floor using the Fire Ring. It is used to move the library shelves on the 3rd floor.
	Sunset Part One	Bracelet - Restaurant Fukushima This is found behind the wall-painting of the cherry blossom after using the Water Ring on the nearby vase of flowers. It is used to unlock the door at the end of the Room of Two Devokings (sic).
	Sunset Part Two	Oval - KAKU Building This found on the 4th floor by using Coyote to jump up through the hole on the 3rd floor. It is used to open the elevator control box down in the basement.
	Cloudman	Cards - Ulmeyda InterCity These are found in the Housing Estate, inside the bedroom of No. 2xx. They can be obtained by, and are used to activate the security panel on the gate at the end of the main street.
	Encounter Part One	Box - ISZK-LAND This is found at the end of the balcony outside the string light quartet theatres. It can be obtained by using the Time Ring on the wrecked dresser, and is used to unlock the power switch box at the other end of the balcony.
	Encounter Part Two	Urn - Blackburn Residence This is found in the rear villa's left-hand bedroom, on a shelf next to the Remnant Psyche of Andrei Ulmeyda. It is used to unlock the swimming pool pump box.
	Encounter Part Two	Orb - Blackburn Residence This is found in a small puddle of dirty water near the entrance to the garage. It can be obtained by using the Fire Ring to evaporate the water, and is used to unlock the swimming pool pump box.
	Alter Ego	Vase - Dominican Republic This is found on a windowsill in an alleyway near Trevor Pearlharbor's estate. It can be obtained by using the Time Ring to reverse the damage done to the sill and remove the wreckage. The player must use it to unlock the Color Sample box next to the villa's main door.
	Smile Part Two	Eye - Coburn Elementary School This disturbing object is found in the safe in the Chairman's Office. Only Garcian can obtain it. It is used to unlock the security terminal in the school's data room.