CPL Safe Manipulation & Lock Opening 2

Question 1

When graphing a safe combination lock during manipulation, what does a 'contact point' refer to?

Accepted Answer

The point on the dial where the drive cam notch aligns with a wheel notch

Answer

A contact point is where the drive cam notch meets a wheel notch, causing a slight resistance change that the manipulator detects.

Question 2

Which type of safe lock is most vulnerable to a 'peel attack' and why?

Accepted Answer

Low-gauge sheet metal safes, because the thin walls can be folded back to expose the locking mechanism

Answer

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.

Question 3

In safe manipulation, what is the purpose of identifying the 'wheel pack'?

Accepted Answer

To determine the number of combination numbers required to open the lock

Answer

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.

Question 4

What is a 'false gate' in a combination lock wheel, and how does it affect manipulation?

Accepted Answer

A shallow indentation designed to mislead manipulation attempts by mimicking a true gate

Answer

False gates are shallow milled indentations on wheels that produce similar tactile feedback as true gates, making manipulation more difficult and time-consuming.

Question 5

When using an endoscope during a safe opening, what is the locksmith primarily looking for?

Accepted Answer

The position of wheel gates relative to the fence to determine combination numbers

Answer

An endoscope allows the locksmith to visually inspect the alignment of wheel gates and the fence position, enabling direct reading of combination numbers.

(CPL) Certified Professional Locksmith Practice Test

(CPL) Certified Professional Locksmith Practice Test

CPL Safe Manipulation & Lock Opening 2