This much; this amount/degree (referring to something near the speaker or in context). Used as a noun or adverb.
このくらいの高さなら梯子は必要ない。
If it's this high, you don't need a ladder.
今日の仕事はこのくらいで終わりにしよう。
Let's finish today's work at about this point.
このくらいの量で足りますか？
Is this amount enough?