What is the 20 market depth feature and how do I view it?
Normally when you check the market depth for any scrip, you see the best 5 bids and offers, this is also called level 2 data. You can access the Level 3 or 20 depth. Level 3 or 20 depth is the market depth with 20 bids and offers. You can access 20 depth by clicking on 'view 20 depth' on the MarketWatch as shown below:
Read this post on Z-Connect to know more. Check out this chapter on Varsity explaining some important use cases of 20 market depth.
Note: This feature is only available for NSE scrips (Stocks and F&O contracts).