She studies the instrument again and, after a frustrated sigh, explains; "Hmm... if these holes are indeed locks designed for small keys, attempting to make an accurate cast of them might cause irreversible damage."
Pouting, she adds; "Perhaps we might be able to employ some form of laser scanner? The sort of device they use for motion capture in Hollywood or medical devices to perform scans. I understand that there are highly accurate laser survey instruments available."
Martha smiled when indulging her secret delight at using the word 'laser'.