Introduction
This small resource package adds a new cool feature to the spyglass. Now the spyglass will help you to understood the approximate and sometimes precise distance to any block.

Main
This resource package adds some lines with numbers in the spyglass interface to help determine the distance to the block.
You just need to aim at any corner of the block, the distance of which you want to determine, and look at the 2 lines (that are attached to the edges of the block, if that's the exact distance).

Examples
25 blocks (exact distance):

30 blocks (closer to 25):

50 blocks (exact distance):

75 blocks (between 50 and 100):

100 blocks (exact distance):

Additionally
In the resource package settings, you can turn off the borders of the spyglass:





Here's what it looks like:

Dark and Light modes (1.1.0)
In version 1.1.0, "Dark Mode with Borders" and "Dark Mode without Borders" is added.
Without borders:

With borders:

You can also switch them in the resource package settings: