diff --git a/src/delta.rs b/src/delta.rs
index ad31fb7..2b24d2f 100644
--- a/src/delta.rs
+++ b/src/delta.rs
@@ -2,8 +2,6 @@ use core::ops::AddAssign;
 
 use nalgebra::Vector3;
 
-use crate::DELTA_VELOCITY_PER_LSB;
-
 #[derive(Default)]
 pub struct DeltaAngle {
     angles: Vector3<i64>,
diff --git a/src/lib.rs b/src/lib.rs
index f2b09a4..868cb7c 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -5,19 +5,6 @@ use embedded_hal_async::spi::{SpiBus, SpiDevice};
 use nalgebra::Vector3;
 use registers::*;
 
-#[cfg(feature = "ADIS1647x-1")]
-const DELTA_ANGLE_RANGE: f32 = 360.;
-#[cfg(feature = "ADIS1647x-2")]
-const DELTA_ANGLE_RANGE: f32 = 720.;
-#[cfg(feature = "ADIS1647x-3")]
-const DELTA_ANGLE_RANGE: f32 = 2160.;
-
-const DELTA_ANGLE_PER_LSB: f32 = DELTA_ANGLE_RANGE / 32768.0;
-
-/// m/s
-const DELTA_VELOCITY_RANGE: f32 = 100.;
-pub(crate) const DELTA_VELOCITY_PER_LSB: f32 = DELTA_VELOCITY_RANGE / 32768.0;
-
 pub mod registers;
 pub mod delta;