On what page does Faber show Montag his gadget collection?

On page 86, Faber guides Montag down a small chamber in his bedroom that leads to where his gadget collection is located. Montag notices numerous metal tools, wires, coils, and crystals on Faber's workbench. Faber tells Montag that he has been fiddling with electronics and radio transmissions for years as a hobby. Faber shows Montag the "green bullet" that he designed. The "green bullet" is a small metal object that resembles a Seashell Radio and allows Faber to communicate with Montag. Montag places the "green bullet" in his ear, and Faber explains how it works. The "green bullet" is essentially a two-way radio that allows Faber to listen to Montag's conversations. Faber tells Montag that he created this invention and had been patiently waiting for a day to utilize his technology. Later on in the novel, Faber listens in on Montag's conversation with Captain Beatty before the "green bullet" is knocked out of Montag's ear.