diff --git a/ball_bearings.scad b/ball_bearings.scad
index df9cf34..b1dae05 100644
--- a/ball_bearings.scad
+++ b/ball_bearings.scad
@@ -223,7 +223,7 @@ function ball_bearing_info(trade_size) =
         ],
         found = search([trade_size], data, 1)[0]
     )
-    assert(found, str("Unsupported ball bearing trade size: ", trade_size))
+    assert(found!=[], str("Unsupported ball bearing trade size: ", trade_size))
     select(data[found], 1, -1);
 
 
diff --git a/linear_bearings.scad b/linear_bearings.scad
index 2ea7dc5..b44d9d5 100644
--- a/linear_bearings.scad
+++ b/linear_bearings.scad
@@ -9,6 +9,9 @@
 //////////////////////////////////////////////////////////////////////
 
 
+include <metric_screws.scad>
+
+
 // Section: Generic Linear Bearings
 
 // Module: linear_bearing_housing()
@@ -152,27 +155,27 @@ function lmXuu_info(size) =
     let(
         data = [
             // size, diam, length
-            [  4.0,   8.0,  12.0],
-            [  5.0,  10.0,  15.0],
-            [  6.0,  12.0,  19.0],
-            [  8.0,  15.0,  24.0],
-            [ 10.0,  19.0,  29.0],
-            [ 12.0,  21.0,  30.0],
-            [ 13.0,  23.0,  32.0],
-            [ 16.0,  28.0,  37.0],
-            [ 20.0,  32.0,  42.0],
-            [ 25.0,  40.0,  59.0],
-            [ 30.0,  45.0,  64.0],
-            [ 35.0,  52.0,  70.0],
-            [ 40.0,  60.0,  80.0],
-            [ 50.0,  80.0, 100.0],
-            [ 60.0,  90.0, 110.0],
-            [ 80.0, 120.0, 140.0],
-            [100.0, 150.0, 175.0],
+            [  4,   8,  12],
+            [  5,  10,  15],
+            [  6,  12,  19],
+            [  8,  15,  24],
+            [ 10,  19,  29],
+            [ 12,  21,  30],
+            [ 13,  23,  32],
+            [ 16,  28,  37],
+            [ 20,  32,  42],
+            [ 25,  40,  59],
+            [ 30,  45,  64],
+            [ 35,  52,  70],
+            [ 40,  60,  80],
+            [ 50,  80, 100],
+            [ 60,  90, 110],
+            [ 80, 120, 140],
+            [100, 150, 175],
         ],
         found = search([size], data, 1)[0]
     )
-    assert(found, str("Unsupported lmXuu linear bearing size: ", size))
+    assert(found!=[], str("Unsupported lmXuu linear bearing size: ", size))
     select(data[found], 1, -1);
 
 
diff --git a/tests/test_linear_bearings.scad b/tests/test_linear_bearings.scad
index fb57ba5..a30d682 100644
--- a/tests/test_linear_bearings.scad
+++ b/tests/test_linear_bearings.scad
@@ -2,27 +2,15 @@ include <../std.scad>
 include <../linear_bearings.scad>
 
 
-module test_get_lmXuu_bearing_diam() {
-    assert_equal(get_lmXuu_bearing_diam(4), 8);
-    assert_equal(get_lmXuu_bearing_diam(8), 15);
-    assert_equal(get_lmXuu_bearing_diam(10), 19);
-    assert_equal(get_lmXuu_bearing_diam(25), 40);
-    assert_equal(get_lmXuu_bearing_diam(50), 80);
-    assert_equal(get_lmXuu_bearing_diam(100), 150);
+module test_lmXuu_info() {
+    assert_equal(lmXuu_info(4), [8, 12]);
+    assert_equal(lmXuu_info(8), [15, 24]);
+    assert_equal(lmXuu_info(10), [19, 29]);
+    assert_equal(lmXuu_info(25), [40, 59]);
+    assert_equal(lmXuu_info(50), [80, 100]);
+    assert_equal(lmXuu_info(100), [150, 175]);
 }
-test_get_lmXuu_bearing_diam();
+test_lmXuu_info();
 
 
-module test_get_lmXuu_bearing_length() {
-    assert_equal(get_lmXuu_bearing_length(4), 12);
-    assert_equal(get_lmXuu_bearing_length(8), 24);
-    assert_equal(get_lmXuu_bearing_length(10), 29);
-    assert_equal(get_lmXuu_bearing_length(25), 59);
-    assert_equal(get_lmXuu_bearing_length(50), 100);
-    assert_equal(get_lmXuu_bearing_length(100), 175);
-}
-test_get_lmXuu_bearing_length();
-
-
-
-// vim: expandtab tabstop=4 shiftwidth=4 softtabstop=4 nowrap
+// vim: expandtab shiftwidth=4 softtabstop=4 nowrap