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  • What is the purpose using the change key?
    What is the purpose using the change key?
    1. Will usually operate only one lock in a series.Reference p157

  • What is a 161 prep?
    What is a 161 prep?
    If you have ever opened a door and had trouble keeping it open or even difficulty opening it, you may need something to help you with the door. A 161 prep may be necessary because it is a lock prep that helps keep the door locked and closed. It is used on a standard door prep. However, there are other door preps, including the 86 Edge. However, these are different than the 161 prep. An 86 Edge is one in which is considered to be a mortise lock prep. There are various measurements for each of these. The 161 prep consists of a 2 1/8 cross bore with two ¾ inches back set. It also has a 1-inch edge bone with mortise being 1 1/8 inch wide and two ¼ inches high.

  • A skeleton key usually operates :
    A skeleton key usually operates :
    Warded locks have gates that the bit of the key must pass

  • What does the shearline of a pin tumbler cylinder describe?
    What does the shearline of a pin tumbler cylinder describe?
    The small amount of space between the plug and the cylinder caseReference p106 second paragraph

  • When does cross-keying occur?
    When does cross-keying occur?
    1. Two or more different keys intentionally operate the same lockP 157

  • What happens when a security pin is picked?
    What happens when a security pin is picked?
    The keyway moves slightly forward

  • What is the most quickest, covert way to breach?
    What is the most quickest, covert way to breach?
    Using a special piece of metal with a hook to pull the plunger or using the credit card method depending on plunger orientation.

  • VIN stands for Vehicle Information Number
    VIN stands for Vehicle Information Number
    False

  • A Change key is a key that:
    A Change key is a key that:
    Will usually operate only one lock in a series.Reference p157

  • When there are no visible screws on the back of a deadbolt to remove it from the door, describe where they may be hidden/located.
    When there are no visible screws on the back of a deadbolt to remove it from the door, describe where they may be hidden/located.
    They can be along the sides of the bolt, like on a LORI mortise cylinder lock They can be under the scalp as on a Kwikset or Schlage They can be behind a shield like the Arrow double cylinder.

  • The key bitting is a recorded number stamped on the key for identification
    The key bitting is a recorded number stamped on the key for identification
    TrueP 159

  • Mechanical locks are commonly used for:
    Mechanical locks are commonly used for:
    High security applicationsReference p 175