C-9057 Keys to Understanding Tubular Locks

$13.03

For the first time, a manual on the 3 most popular tubular locks that are used on vending machines, coin operated washers & dryers, coin changers and burglar alarms. Internal construction is fully covered as well as how to open the locks by drilling and by impressioning. Softcover, 51/2x81/2, 40 pages, illus.