Hi Mantas,
Thank you for contacting Syncfusion support.
The labels in the Circular Gauge are rendered based on the
interval set in the axis major ticks. We can set the "interval"
property of the "majorTicks" property of the "e-axis"
tag to "30" because ranges are added at intervals of 30. We
have created a sample to demonstrate this, which can be found at the link
below.
https://stackblitz.com/edit/angular-yhdw97
Please let us know if you need any further assistance.
Regards,
Sabari Anand.