Wiktionary
phr. (non-gloss definition: used as a filled pause to indicating thinking or pondering, but allowing hearer to participate)
Wikipedia
Let's See was a Canadian television series broadcast on CBC Television between September 6, 1952 to July 4, 1953. The segment, which had a running time of 15 minutes, was a puppet show with a character named Uncle Chichimus (voice of John Conway), which presented each evening's schedule as well as the weather forecast. Percy Saltzman was host and Larry D. Mann was a regular.
The show was produced by Norman Campbell, Franz Kraemer, Norman Jewison, and Don Brown. Joan Hughes was the script assistant.
Let's See is an American game show that aired on the ABC Network on Thursday nights from July 14, 1955 to August 25, 1955.
Usage examples of "let's see".
We don't have to be bound by files as linear streams of bytes anymore, vive la revolution, let's see how far we can take this!
For a start, let's see if we still have any control over the shuttlecraft.
Since I don't have a clue how to resolve this problem, let's see if the Prophets will tell Tork how to do it.
Okay, now let's see how you like being on the other end of the stick.
Now let's see if they're able to respond to an attempt at communication.
I never expected to show it to anyone, but let's see if you can work it.