Gauge cutter and lead impression block apparatus

An apparatus comprising:

• a gauge cutter having a gauge cutter tubular body, a gauge cutter head, and an orifice, wherein the orifice extends through the gauge cutter tubular body and the gauge cutter head;
• a lead impression block (LIB) having an LIB body and an LIB head, wherein the LIB is fixed in a first position within the orifice of the gauge cutter by being connected to an inner circumferential surface of the gauge cutter tubular body using a shear pin;
• a locking pin disposed around the LIB body;
• and
• a locking device disposed around the inner circumferential surface of the gauge cutter tubular body, the locking device configured to mate with the locking pin to hold the LIB in a second position within the gauge cutter, wherein the second position includes a portion of the LIB body located within the orifice and the LIB head located outside of the orifice.