TEST YOUR KNOWLEDGE

Safe lock manipulation quiz



True or False


(1)

A technician starting out in manipulation should always use graphs.

  • True
  • False

(2)

A technician starting out in manipulation should always read both contact points.

  • True
  • False

(3)

Before beginning a manipulation a wheel count is mandatory.

  • True
  • False

(4)

The terms manipulation and progression are synonymous.

  • True
  • False

(5)

All mechanical combination locks can be manipulated.

  • True
  • False

(6)

All combination locks that are manipulated open in their normal factory dialing sequence.

  • True
  • False

(7)

Solid contact points are assurance of a fast and easy manipulation.

  • True
  • False

(8)

Dial and dial ring of same brand on safe door guarantee a combination lock of same brand on the inside.

  • True
  • False

(9)

A loose spline key does not affect the manipulation process.

  • True
  • False

(10)

In locks that have fixed drive pins, all combination numbers change dramatically when dialing direction is reversed.

  • True
  • False

(11)

All combination locks have two contact points.

  • True
  • False

Multiple Choice


(1)

In a standard mechanical combination lock, the wheel that usually indicates before any other is:

  • First
  • Second
  • Third

(2)

You have just finished running your first graph all wheels left (AWL). Which should be your next step?

  • Look for best indication
  • Run all wheels right (AWR)
  • Center best indication

(3)

Fence and gate tolerance for a UL listed group 2 combination lock is two numbers. Which is the progression increment for fastest manipulation without the risk of skipping a number?

  • 1.5
  • 2
  • 2.5

(4)

In front driven combination locks, a slight inward deflection of the fence will cause one of the wheels to indicate first. Which wheel is this?

  • First
  • Second
  • Third

(5)

In rear driven combination locks, a slight inward deflection of the fence will cause one of the wheels to indicate first. Which wheel is this?

  • First
  • Second
  • Third

(6)

In rear driven combination locks, a slight outward deflection of the fence will cause one of the wheels to indicate first. Which wheel is this?

  • First
  • Second
  • Third

(7)

In front driven combination locks, a slight outward deflection  of the fence will cause one of the wheels to indicate first. Which wheel is this?

  • First
  • Second
  • Third

(8)

Of all five senses, which is the most important in safe lock manipulation?

  • Sight
  • Hearing
  • Touch

TO BE CONTINUED...


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