Most all of my clocks are broken, but they could have working parts inside. If you need a broken clock, I'll keep an eye out for a nice one.
うちの時計はほとんどが壊れた物。でも、なかにはちゃんと動く品もあるんだ。あんたには…とびきり壊れた時計を探しておいてやるよ。
101Leafy researched the game with the Hilltop Works fan translation patch, English translation by Cargodin

Broken Clock is item 19 of the game's item table, in the Items group. The script names it on disc 1.
Lines of the script that name it, each with a link to its place in the script.
Most all of my clocks are broken, but they could have working parts inside. If you need a broken clock, I'll keep an eye out for a nice one.
うちの時計はほとんどが壊れた物。でも、なかにはちゃんと動く品もあるんだ。あんたには…とびきり壊れた時計を探しておいてやるよ。
Well, well! You broke the barrier!
Your next stop is Fu Shin Court. If you run into a door there that won't open, use a wire on it. Any thick wire will do. If it were me, I'd ask the clockmaker if he had a broken clock I could use. Assuming it had a wire inside, I'd find a way to pluck it out!
どうだ、結界を解いたのか?
次の富善苑(フーシンコート)の中で、どうしても開かない扉に出くわしたら、針金を使うんだ。丈夫な、太い針金がいいぞ。時計屋にある壊れた時計が使えるんじゃないかな。あれは、中身が針金なんだ。なにかの方法で針金を取り出すんだ。
Broken Clock acquired.
「壊れた時計」を入手しました。
"What good is a broken clock?" If you're asking that, you still don't get how this city operates. I have an idea, go visit the locksmith before you head into the hutongs next.
壊れた時計を、何に使うかって?そりゃ、あんた…まだ、この街のことを良くわかってないってことだよ。胡同の中のことなら、錠前屋が詳しいよ。
One broken clock, coming right up! The clock can't be used as-is, but it can be stripped for parts.
ほうら、とびきりの壊れた時計だ。工夫すれば役に立つはずだよ。ただ、そのままでは使えないからな。
Item table: Thick Pipe Broken Clock Hippie Wirework
English translations by Cargodin for Hilltop Works Fan Translation Patch: https://www.patreon.com/hilltopworks/posts/kowloons-gate-160555525?collection=18503