Locksmith Impressioning Books Souber Locksmith Impressioning Books Impressioning lever locks Book: Authoritive Manual on The McColl Method of Impressioning Lever Locks. Covers 2 lever locks to 6 lever Safe Locks. Clear step by step descriptions. Appropriately illustrated and easy to follow. Could save drilling in many instances. Impressioning instruction Book: This leaflet provides a useful introduction to the technique. Written by a skilled locksmith who trains others in the art of impressioning.
