Safe Manipulation & Lock Opening Flashcards
7 cards from real CPL practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Safe Manipulation & Lock Opening flashcards as text
When graphing a safe combination lock during manipulation, what does a 'contact point' refer to?
Answer: The point on the dial where the drive cam notch aligns with a wheel notch
A contact point is where the drive cam notch meets a wheel notch, causing a slight resistance change that the manipulator detects.
Which type of safe lock is most vulnerable to a 'peel attack' and why?
Answer: Low-gauge sheet metal safes, because the thin walls can be folded back to expose the locking mechanism
Low-gauge sheet metal safes are susceptible to peel attacks because attackers can use tools to fold back the thin metal and access the bolt work directly.
In safe manipulation, what is the purpose of identifying the 'wheel pack'?
Answer: To determine the number of combination numbers required to open the lock
The wheel pack refers to the set of wheels in the combination lock, and identifying its size tells the manipulator how many numbers are in the combination.
What is a 'false gate' in a combination lock wheel, and how does it affect manipulation?
Answer: A shallow indentation designed to mislead manipulation attempts by mimicking a true gate
False gates are shallow milled indentations on wheels that produce similar tactile feedback as true gates, making manipulation more difficult and time-consuming.
When using an endoscope during a safe opening, what is the locksmith primarily looking for?
Answer: The position of wheel gates relative to the fence to determine combination numbers
An endoscope allows the locksmith to visually inspect the alignment of wheel gates and the fence position, enabling direct reading of combination numbers.
Which manipulation technique involves slowly rotating the dial while applying light pressure to the handle to detect changes in resistance?
Answer: Pressure manipulation
Pressure manipulation involves applying light handle pressure while rotating the dial, feeling for the point where gate alignment reduces bolt resistance.
What is the correct procedure after successfully manipulating a safe combination lock open for the first time?
Answer: Record the found combination, test it multiple times, and document it for the customer
After finding the combination, a professional locksmith records it, verifies it by testing multiple times, and provides full documentation to the customer.