diff --git a/Aircraft/Instruments-3d/altimeter/altimeter-mount.png b/Aircraft/Instruments-3d/altimeter/altimeter-mount.png
index 22ffce925..d9323ab07 100644
Binary files a/Aircraft/Instruments-3d/altimeter/altimeter-mount.png and b/Aircraft/Instruments-3d/altimeter/altimeter-mount.png differ
diff --git a/Aircraft/Instruments-3d/altimeter/altimeter.ac b/Aircraft/Instruments-3d/altimeter/altimeter.ac
index e2d3c3ef2..cbbe8e5f8 100644
--- a/Aircraft/Instruments-3d/altimeter/altimeter.ac
+++ b/Aircraft/Instruments-3d/altimeter/altimeter.ac
@@ -1,8 +1,9 @@
 AC3Db
+MATERIAL "ac3dmat1" rgb 1 1 1  amb 1 1 1  emis 0 0 0  spec 1 1 1  shi 20  trans 0
+MATERIAL "ac3dmat1" rgb 1 1 1  amb 1 1 1  emis 0 0 0  spec 0.5 0.5 0.5  shi 10  trans 0
 MATERIAL "ac3dmat1" rgb 1 1 1  amb 1 1 1  emis 0 0 0  spec 0.2 0.2 0.2  shi 128  trans 0
 MATERIAL "ac3dmat1" rgb 1 1 1  amb 1 1 1  emis 0 0 0  spec 0 0 0  shi 10  trans 0
 MATERIAL "ac3dmat0" rgb 0 0 0  amb 0 0 0  emis 0 0 0  spec 0 0 0  shi 10  trans 0
-MATERIAL "ac3dmat1" rgb 1 1 1  amb 1 1 1  emis 0 0 0  spec 0.5 0.5 0.5  shi 10  trans 0
 MATERIAL "ac3dmat1" rgb 0 0 0  amb 0 0 0  emis 0 0 0  spec 0 0 0  shi 0  trans 1
 MATERIAL "ac3dmat1" rgb 0 0 0  amb 0 0 0  emis 0 0 0  spec 0 0 0  shi 0  trans 0
 OBJECT world
@@ -14,6 +15,7 @@ kids 8
 OBJECT poly
 name "bkg"
 loc -0.0125159 0.00538627 0.000518467
+texture "altimeter-mount.png"
 crease 45.000000
 numvert 4
 0 -0.0393942 -0.0398285
@@ -22,12 +24,12 @@ numvert 4
 0 0.0393942 -0.0398285
 numsurf 1
 SURF 0x30
-mat 5
+mat 6
 refs 4
-3 1 1
-2 0 1
-1 0 0
-0 1 0
+3 0.5 0.5
+2 0.5 0.5
+1 0.5 0.5
+0 0.5 0.5
 kids 0
 OBJECT group
 name "knobs"
@@ -66,126 +68,126 @@ numvert 25
 -0.00623698 0.00150404 -0.00299215
 numsurf 19
 SURF 0x0
-mat 0
+mat 2
 refs 4
 22 0.171762 0.769478
 19 0.171916 0.773954
 18 0.173413 0.774007
 23 0.173845 0.76955
 SURF 0x0
-mat 0
+mat 2
 refs 4
 23 0.173845 0.76955
 18 0.173413 0.774007
 17 0.173426 0.774748
 24 0.173845 0.769539
 SURF 0x0
-mat 0
+mat 2
 refs 4
 21 0.171762 0.769466
 20 0.171825 0.774692
 19 0.171916 0.773954
 22 0.171762 0.769478
 SURF 0x0
-mat 0
+mat 2
 refs 4
 17 0.173426 0.774748
 18 0.173413 0.774007
 19 0.171916 0.773954
 20 0.171825 0.774692
 SURF 0x0
-mat 0
+mat 2
 refs 4
 8 0.172141 0.765776
 16 0.172106 0.765647
 9 0.170939 0.767076
 1 0.171028 0.767141
 SURF 0x0
-mat 0
+mat 2
 refs 4
 7 0.173672 0.765816
 15 0.173712 0.765691
 16 0.172106 0.765647
 8 0.172141 0.765776
 SURF 0x0
-mat 0
+mat 2
 refs 4
 6 0.174669 0.767216
 14 0.17476 0.767161
 15 0.173712 0.765691
 7 0.173672 0.765816
 SURF 0x0
-mat 0
+mat 2
 refs 4
 5 0.174607 0.76906
 13 0.174697 0.7691
 14 0.17476 0.767161
 6 0.174669 0.767216
 SURF 0x0
-mat 0
+mat 2
 refs 4
 4 0.173535 0.770409
 12 0.173571 0.770515
 13 0.174697 0.7691
 5 0.174607 0.76906
 SURF 0x0
-mat 0
+mat 2
 refs 4
 2 0.170967 0.768951
 10 0.170877 0.768983
 11 0.171966 0.770455
 3 0.172004 0.770353
 SURF 0x0
-mat 0
+mat 2
 refs 4
 1 0.171028 0.767141
 9 0.170939 0.767076
 10 0.170877 0.768983
 2 0.170967 0.768951
 SURF 0x0
-mat 0
+mat 2
 refs 3
 0 0.172816 0.768133
 8 0.172141 0.765776
 1 0.171028 0.767141
 SURF 0x0
-mat 0
+mat 2
 refs 3
 0 0.172816 0.768133
 7 0.173672 0.765816
 8 0.172141 0.765776
 SURF 0x0
-mat 0
+mat 2
 refs 3
 0 0.172816 0.768133
 6 0.174669 0.767216
 7 0.173672 0.765816
 SURF 0x0
-mat 0
+mat 2
 refs 3
 0 0.172816 0.768133
 5 0.174607 0.76906
 6 0.174669 0.767216
 SURF 0x0
-mat 0
+mat 2
 refs 3
 0 0.172816 0.768133
 4 0.173535 0.770409
 5 0.174607 0.76906
 SURF 0x0
-mat 0
+mat 2
 refs 3
 0 0.172816 0.768133
 3 0.172004 0.770353
 4 0.173535 0.770409
 SURF 0x0
-mat 0
+mat 2
 refs 3
 0 0.172816 0.768133
 2 0.170967 0.768951
 3 0.172004 0.770353
 SURF 0x0
-mat 0
+mat 2
 refs 3
 0 0.172816 0.768133
 1 0.171028 0.767141
@@ -224,160 +226,160 @@ numvert 25
 -0.012347 0.00451085 0.00435962
 numsurf 24
 SURF 0x10
-mat 0
+mat 2
 refs 3
 0 0.125077 0.096618
 8 0.130031 0.096618
 1 0.12858 0.0927022
 SURF 0x10
-mat 0
+mat 2
 refs 3
 0 0.125077 0.096618
 1 0.12858 0.0927022
 2 0.125077 0.0910803
 SURF 0x10
-mat 0
+mat 2
 refs 3
 0 0.125077 0.096618
 2 0.125077 0.0910803
 3 0.121573 0.0927022
 SURF 0x10
-mat 0
+mat 2
 refs 3
 0 0.125077 0.096618
 3 0.121573 0.0927022
 4 0.120122 0.096618
 SURF 0x10
-mat 0
+mat 2
 refs 3
 0 0.125077 0.096618
 4 0.120122 0.096618
 5 0.121573 0.100534
 SURF 0x10
-mat 0
+mat 2
 refs 3
 0 0.125077 0.096618
 5 0.121573 0.100534
 6 0.125077 0.102156
 SURF 0x10
-mat 0
+mat 2
 refs 3
 0 0.125077 0.096618
 6 0.125077 0.102156
 7 0.12858 0.100534
 SURF 0x10
-mat 0
+mat 2
 refs 3
 0 0.125077 0.096618
 7 0.12858 0.100534
 8 0.130031 0.096618
 SURF 0x10
-mat 0
+mat 2
 refs 4
 1 0.0358929 0.0522682
 8 0.0365473 0.0542604
 10 0.0367956 0.0542604
 9 0.0360684 0.0520468
 SURF 0x10
-mat 0
+mat 2
 refs 4
 9 0.128969 0.0922671
 10 0.130582 0.096618
 12 0.130582 0.096618
 11 0.128969 0.0922671
 SURF 0x10
-mat 0
+mat 2
 refs 4
 2 0.0343129 0.0514429
 1 0.0358929 0.0522682
 9 0.0360684 0.0520468
 13 0.0343129 0.0511299
 SURF 0x10
-mat 0
+mat 2
 refs 4
 13 0.125077 0.090465
 9 0.128969 0.0922671
 11 0.128969 0.0922671
 14 0.125077 0.090465
 SURF 0x10
-mat 0
+mat 2
 refs 4
 3 0.0327328 0.0522682
 2 0.0343129 0.0514429
 13 0.0343129 0.0511299
 15 0.0325573 0.0520468
 SURF 0x10
-mat 0
+mat 2
 refs 4
 15 0.121184 0.0922671
 13 0.125077 0.090465
 14 0.125077 0.090465
 16 0.121184 0.0922671
 SURF 0x10
-mat 0
+mat 2
 refs 4
 4 0.0320784 0.0542604
 3 0.0327328 0.0522682
 15 0.0325573 0.0520468
 17 0.03183 0.0542604
 SURF 0x10
-mat 0
+mat 2
 refs 4
 17 0.119571 0.096618
 15 0.121184 0.0922671
 16 0.121184 0.0922671
 18 0.119571 0.096618
 SURF 0x10
-mat 0
+mat 2
 refs 4
 5 0.0327328 0.0562526
 4 0.0320784 0.0542604
 17 0.03183 0.0542604
 19 0.0325573 0.0564739
 SURF 0x10
-mat 0
+mat 2
 refs 4
 19 0.121184 0.100969
 17 0.119571 0.096618
 18 0.119571 0.096618
 20 0.121184 0.100969
 SURF 0x10
-mat 0
+mat 2
 refs 4
 6 0.0343129 0.0570778
 5 0.0327328 0.0562526
 19 0.0325573 0.0564739
 21 0.0343129 0.0573908
 SURF 0x10
-mat 0
+mat 2
 refs 4
 21 0.125077 0.102771
 19 0.121184 0.100969
 20 0.121184 0.100969
 22 0.125077 0.102771
 SURF 0x10
-mat 0
+mat 2
 refs 4
 7 0.0358929 0.0562526
 6 0.0343129 0.0570778
 21 0.0343129 0.0573908
 23 0.0360684 0.0564739
 SURF 0x10
-mat 0
+mat 2
 refs 4
 23 0.128969 0.100969
 21 0.125077 0.102771
 22 0.125077 0.102771
 24 0.128969 0.100969
 SURF 0x10
-mat 0
+mat 2
 refs 4
 8 0.0365473 0.0542604
 7 0.0358929 0.0562526
 23 0.0360684 0.0564739
 10 0.0367956 0.0542604
 SURF 0x10
-mat 0
+mat 2
 refs 4
 10 0.130582 0.096618
 23 0.128969 0.100969
@@ -387,7 +389,64 @@ kids 0
 OBJECT group
 name "drums"
 loc -0.00375798 -0.00291064 -0.000649768
-kids 7
+kids 10
+OBJECT poly
+name "negativ-flag"
+loc -0.00692231 0.00838725 0.0198654
+texture "altimeter-mount.png"
+crease 45.000000
+numvert 4
+0 0.00559777 -0.00701127
+0 0.00559777 0.00701127
+0 -0.00559777 0.00701127
+0 -0.00559777 -0.00701127
+numsurf 1
+SURF 0x30
+mat 0
+refs 4
+0 0.740563 0.688512
+1 0.487505 0.688512
+2 0.487505 0.50887
+3 0.740563 0.50887
+kids 0
+OBJECT poly
+name "below-1000-flag"
+loc -0.00743772 0.00838725 0.0162683
+texture "altimeter-mount.png"
+crease 45.000000
+numvert 4
+0 0.00559777 -0.00340564
+0 0.00559777 0.00340564
+0 -0.00559777 0.00340564
+0 -0.00559777 -0.00340564
+numsurf 1
+SURF 0x30
+mat 0
+refs 4
+0 0.678626 0.490313
+1 0.54719 0.490313
+2 0.54719 0.310671
+3 0.678626 0.310671
+kids 0
+OBJECT poly
+name "below-10000-flag"
+loc -0.00743772 0.00838725 0.023471
+texture "altimeter-mount.png"
+crease 45.000000
+numvert 4
+0 -0.00559777 -0.00340564
+0 -0.00559777 0.00340564
+0 0.00559777 0.00340564
+0 0.00559777 -0.00340564
+numsurf 1
+SURF 0x30
+mat 0
+refs 4
+3 0.617815 0.490313
+2 0.486379 0.490313
+1 0.486379 0.310671
+0 0.617815 0.310671
+kids 0
 OBJECT poly
 name "drum-inhg-1"
 loc -0.00745182 -0.00594418 -0.0171411
@@ -400,7 +459,7 @@ numvert 4
 -1.83415e-05 0.00619633 0.00172197
 numsurf 1
 SURF 0x10
-mat 1
+mat 3
 refs 4
 2 0.926174 0.719127
 0 1.00022 0.719127
@@ -419,7 +478,7 @@ numvert 4
 1.83443e-05 -0.00619632 -0.00177062
 numsurf 1
 SURF 0x10
-mat 1
+mat 3
 refs 4
 1 0.926174 0.719127
 3 1.00022 0.719127
@@ -438,7 +497,7 @@ numvert 4
 -1.83415e-05 0.00619633 0.00173818
 numsurf 1
 SURF 0x10
-mat 1
+mat 3
 refs 4
 2 0.926174 0.719127
 0 1.00022 0.719127
@@ -457,7 +516,7 @@ numvert 4
 1.83443e-05 -0.00619632 -0.00172195
 numsurf 1
 SURF 0x10
-mat 1
+mat 3
 refs 4
 1 0.926174 0.719127
 3 1.00022 0.719127
@@ -476,7 +535,7 @@ numvert 4
 9.19048e-05 -0.0123196 -0.00338637
 numsurf 1
 SURF 0x10
-mat 1
+mat 3
 refs 4
 1 0.924428 0.720413
 3 1.00172 0.720413
@@ -495,7 +554,7 @@ numvert 4
 -9.19066e-05 0.0123196 0.00338637
 numsurf 1
 SURF 0x10
-mat 1
+mat 3
 refs 4
 2 0.924428 0.720413
 0 1.00172 0.720413
@@ -514,7 +573,7 @@ numvert 4
 9.19048e-05 -0.0123196 -0.00338636
 numsurf 1
 SURF 0x10
-mat 1
+mat 3
 refs 4
 1 0.924428 0.720413
 3 1.00172 0.720413
@@ -547,43 +606,43 @@ numvert 15
 5.126e-05 -0.00978975 5.76191e-05
 numsurf 7
 SURF 0x0
-mat 3
+mat 1
 refs 3
 0 0.4 1
 1 0.76 0.949541
 2 0 0.958716
 SURF 0x0
-mat 3
+mat 1
 refs 3
 1 0.76 0.949541
 3 0.840002 0.087156
 4 0.320001 0.0733945
 SURF 0x0
-mat 3
+mat 1
 refs 3
 2 0 0.958716
 1 0.76 0.949541
 4 0.320001 0.0733945
 SURF 0x0
-mat 3
+mat 1
 refs 3
 7 0 0.958716
 6 0.76 0.949541
 5 0.320001 0.0733945
 SURF 0x0
-mat 3
+mat 1
 refs 3
 10 0.76 0.949541
 9 0.840002 0.087156
 8 0.320001 0.0733945
 SURF 0x0
-mat 1
+mat 3
 refs 3
 11 0.320001 0.0733945
 12 0.840002 0.087156
 13 0.280001 0
 SURF 0x0
-mat 1
+mat 3
 refs 3
 14 1 0.00458717
 13 0.280001 0
@@ -600,13 +659,13 @@ numvert 4
 4.52753e-05 -0.00853676 0.000120744
 numsurf 2
 SURF 0x0
-mat 2
+mat 4
 refs 3
 0 0.320001 0.0733945
 1 0.840002 0.087156
 2 0.280001 0
 SURF 0x0
-mat 2
+mat 4
 refs 3
 3 1 0.00458717
 2 0.280001 0
@@ -638,101 +697,101 @@ numvert 18
 -5.41741e-05 0.0103467 0.0110924
 numsurf 16
 SURF 0x10
-mat 0
+mat 2
 refs 3
 15 -0.000430424 1.00001
 17 0.321137 0.667456
 16 0.405385 0.667456
 SURF 0x10
-mat 0
+mat 2
 refs 3
 15 -0.000430424 1.00001
 16 0.405385 0.667456
 8 0.925113 1.00001
 SURF 0x10
-mat 0
+mat 2
 refs 4
 15 -0.000430424 1.00001
 14 0.139587 0.604733
 13 0.321137 0.604733
 17 0.321137 0.667456
 SURF 0x10
-mat 0
+mat 2
 refs 3
 16 0.405385 0.667456
 12 0.405385 0.604733
 8 0.925113 1.00001
 SURF 0x10
-mat 0
+mat 2
 refs 4
 15 -0.000430424 1.00001
 1 -0.000430424 0.0721802
 11 0.139587 0.47337
 14 0.139587 0.604733
 SURF 0x10
-mat 0
+mat 2
 refs 3
 12 0.405385 0.604733
 9 0.405385 0.47337
 8 0.925113 1.00001
 SURF 0x10
-mat 0
+mat 2
 refs 4
 11 0.139587 0.47337
 1 -0.000430424 0.0721802
 7 0.321137 0.410648
 10 0.321137 0.47337
 SURF 0x10
-mat 0
+mat 2
 refs 4
 9 0.405385 0.47337
 6 0.405385 0.410648
 5 0.533537 0.388162
 8 0.925113 1.00001
 SURF 0x10
-mat 0
+mat 2
 refs 3
 8 0.925113 1.00001
 5 0.533537 0.388162
 4 0.713899 0.388162
 SURF 0x10
-mat 0
+mat 2
 refs 3
 8 0.925113 1.00001
 4 0.713899 0.388162
 0 0.925113 0.0721802
 SURF 0x10
-mat 0
+mat 2
 refs 3
 7 0.321137 0.410648
 1 -0.000430424 0.0721802
 6 0.405385 0.410648
 SURF 0x10
-mat 0
+mat 2
 refs 3
 6 0.405385 0.410648
 1 -0.000430424 0.0721802
 5 0.533537 0.388162
 SURF 0x10
-mat 0
+mat 2
 refs 3
 1 -0.000430424 0.0721802
 3 0.533537 0.317154
 5 0.533537 0.388162
 SURF 0x10
-mat 0
+mat 2
 refs 3
 4 0.713899 0.388162
 2 0.713899 0.317154
 0 0.925113 0.0721802
 SURF 0x10
-mat 0
+mat 2
 refs 3
 1 -0.000430424 0.0721802
 0 0.925113 0.0721802
 3 0.533537 0.317154
 SURF 0x10
-mat 0
+mat 2
 refs 3
 3 0.533537 0.317154
 0 0.925113 0.0721802
@@ -792,252 +851,252 @@ numvert 46
 0.00250081 -0.0138084 0.0332893
 numsurf 38
 SURF 0x30
-mat 0
+mat 2
 refs 3
 0 0.92116 0.434405
 21 0.929543 0.442095
 8 0.92116 0.434405
 SURF 0x30
-mat 0
+mat 2
 refs 3
 21 0.929543 0.442095
 0 0.92116 0.434405
 7 0.92116 0.434405
 SURF 0x30
-mat 0
+mat 2
 refs 3
 1 0.92116 0.434405
 14 0.92126 0.435209
 29 0.921271 0.442095
 SURF 0x30
-mat 0
+mat 2
 refs 3
 29 0.921271 0.442095
 2 0.92116 0.434405
 1 0.92116 0.434405
 SURF 0x30
-mat 0
+mat 2
 refs 3
 14 0.92126 0.435209
 1 0.92116 0.434405
 13 0.92116 0.434405
 SURF 0x30
-mat 0
+mat 2
 refs 4
 27 0.921329 0.449319
 3 0.92116 0.434405
 2 0.92116 0.434405
 28 0.92126 0.44889
 SURF 0x30
-mat 0
+mat 2
 refs 4
 26 0.921557 0.449494
 4 0.92116 0.434405
 3 0.92116 0.434405
 27 0.921329 0.449319
 SURF 0x30
-mat 0
+mat 2
 refs 3
 25 0.925407 0.449491
 5 0.92116 0.434405
 4 0.92116 0.434405
 SURF 0x30
-mat 0
+mat 2
 refs 3
 25 0.925407 0.449491
 24 0.92116 0.434405
 5 0.92116 0.434405
 SURF 0x30
-mat 0
+mat 2
 refs 3
 26 0.921557 0.449494
 25 0.925407 0.449491
 4 0.92116 0.434405
 SURF 0x30
-mat 0
+mat 2
 refs 3
 17 0.925407 0.434699
 11 0.92116 0.434405
 10 0.92116 0.434405
 SURF 0x30
-mat 0
+mat 2
 refs 3
 17 0.925407 0.434699
 16 0.921532 0.434695
 11 0.92116 0.434405
 SURF 0x30
-mat 0
+mat 2
 refs 3
 18 0.929207 0.434695
 17 0.925407 0.434699
 10 0.92116 0.434405
 SURF 0x30
-mat 0
+mat 2
 refs 4
 19 0.929434 0.434848
 18 0.929207 0.434695
 10 0.92116 0.434405
 9 0.92116 0.434405
 SURF 0x30
-mat 0
+mat 2
 refs 4
 20 0.929529 0.435254
 19 0.929434 0.434848
 9 0.92116 0.434405
 8 0.92116 0.434405
 SURF 0x30
-mat 0
+mat 2
 refs 3
 21 0.929543 0.442095
 20 0.929529 0.435254
 8 0.92116 0.434405
 SURF 0x30
-mat 0
+mat 2
 refs 3
 22 0.929542 0.448958
 21 0.929543 0.442095
 7 0.92116 0.434405
 SURF 0x30
-mat 0
+mat 2
 refs 4
 6 0.92116 0.434405
 23 0.92116 0.434405
 22 0.929542 0.448958
 7 0.92116 0.434405
 SURF 0x0
-mat 1
+mat 3
 refs 4
 30 0.076149 0.503444
 31 0.108446 0.664747
 28 0.0117448 0.948318
 29 0.0130355 0.503444
 SURF 0x0
-mat 1
+mat 3
 refs 4
 31 0.108446 0.664747
 32 0.200421 0.801487
 27 0.0199547 0.976399
 28 0.0117448 0.948318
 SURF 0x0
-mat 1
+mat 3
 refs 4
 32 0.200421 0.801487
 33 0.338073 0.892862
 26 0.0467756 0.987878
 27 0.0199547 0.976399
 SURF 0x0
-mat 1
+mat 3
 refs 4
 33 0.338073 0.892862
 34 0.500443 0.924936
 25 0.500443 0.987637
 26 0.0467756 0.987878
 SURF 0x0
-mat 1
+mat 3
 refs 4
 34 0.500443 0.924936
 35 0.662812 0.892862
 24 0.958475 0.987877
 25 0.500443 0.987637
 SURF 0x0
-mat 1
+mat 3
 refs 4
 35 0.662812 0.892862
 36 0.800465 0.801487
 23 0.980891 0.974908
 24 0.958475 0.987877
 SURF 0x0
-mat 1
+mat 3
 refs 4
 36 0.800465 0.801487
 37 0.892439 0.664747
 22 0.987659 0.952755
 23 0.980891 0.974908
 SURF 0x0
-mat 1
+mat 3
 refs 4
 37 0.892439 0.664747
 38 0.924737 0.503444
 21 0.98785 0.503444
 22 0.987659 0.952755
 SURF 0x0
-mat 1
+mat 3
 refs 4
 38 0.924737 0.503444
 39 0.892439 0.342142
 20 0.986188 0.0556207
 21 0.98785 0.503444
 SURF 0x0
-mat 1
+mat 3
 refs 4
 39 0.892439 0.342142
 40 0.800465 0.205402
 19 0.975014 0.029042
 20 0.986188 0.0556207
 SURF 0x0
-mat 1
+mat 3
 refs 4
 40 0.800465 0.205402
 41 0.662812 0.114027
 18 0.948233 0.0189992
 19 0.975014 0.029042
 SURF 0x0
-mat 1
+mat 3
 refs 4
 41 0.662812 0.114027
 42 0.500443 0.0819523
 17 0.500443 0.0192504
 18 0.948233 0.0189992
 SURF 0x0
-mat 1
+mat 3
 refs 4
 42 0.500443 0.0819523
 43 0.338073 0.114027
 16 0.0438026 0.0190005
 17 0.500443 0.0192504
 SURF 0x0
-mat 1
+mat 3
 refs 4
 43 0.338073 0.114027
 44 0.200421 0.205402
 15 0.0243895 0.0304906
 16 0.0438026 0.0190005
 SURF 0x0
-mat 1
+mat 3
 refs 4
 44 0.200421 0.205402
 45 0.108446 0.342142
 14 0.0117448 0.052664
 15 0.0243895 0.0304906
 SURF 0x0
-mat 1
+mat 3
 refs 4
 45 0.108446 0.342142
 30 0.076149 0.503444
 29 0.0130355 0.503444
 14 0.0117448 0.052664
 SURF 0x30
-mat 0
+mat 2
 refs 4
 24 0.92116 0.434405
 23 0.92116 0.434405
 6 0.92116 0.434405
 5 0.92116 0.434405
 SURF 0x30
-mat 0
+mat 2
 refs 3
 2 0.92116 0.434405
 29 0.921271 0.442095
 28 0.92126 0.44889
 SURF 0x30
-mat 0
+mat 2
 refs 4
 13 0.92116 0.434405
 12 0.92116 0.434405
 15 0.921367 0.43487
 14 0.92126 0.435209
 SURF 0x30
-mat 0
+mat 2
 refs 4
 12 0.92116 0.434405
 11 0.92116 0.434405
@@ -1046,16 +1105,16 @@ refs 4
 kids 0
 OBJECT poly
 name "ingh-knob-left"
-loc -0.00392812 -0.0235156 0.0385937
+loc -0.00389014 -0.0235156 0.0385937
 crease 45.000000
 numvert 4
--3.79849e-05 0.00725442 -0.00589755
--3.79849e-05 0.00725442 0.00589755
-3.79812e-05 -0.00725443 0.00589755
-3.79812e-05 -0.00725443 -0.00589755
+0 0.00725442 -0.00589755
+0 0.00725442 0.00589755
+0 -0.00725443 0.00589755
+0 -0.00725443 -0.00589755
 numsurf 1
 SURF 0x30
-mat 4
+mat 5
 refs 4
 0 1 1
 1 0 1
@@ -1064,16 +1123,16 @@ refs 4
 kids 0
 OBJECT poly
 name "ingh-knob-right"
-loc -0.00582793 -0.0235156 0.0254512
+loc -0.00389014 -0.0235156 0.0254512
 crease 45.000000
 numvert 4
-3.79812e-05 -0.00725443 -0.00589755
-3.79812e-05 -0.00725443 0.00589755
--3.79849e-05 0.00725442 0.00589755
--3.79849e-05 0.00725442 -0.00589755
+0 -0.00725443 -0.00589755
+0 -0.00725443 0.00589755
+0 0.00725442 0.00589755
+0 0.00725442 -0.00589755
 numsurf 1
 SURF 0x30
-mat 4
+mat 5
 refs 4
 3 1 1
 2 0 1
diff --git a/Aircraft/Instruments-3d/altimeter/altimeter.xml b/Aircraft/Instruments-3d/altimeter/altimeter.xml
index bb211e5df..4bf1b0412 100644
--- a/Aircraft/Instruments-3d/altimeter/altimeter.xml
+++ b/Aircraft/Instruments-3d/altimeter/altimeter.xml
@@ -20,7 +20,7 @@
 		<type>rotate</type>
 		<object-name>needle</object-name>
 		<property>instrumentation/altimeter/indicated-altitude-ft</property>
-		<factor>3.6</factor>  
+		<factor>0.36</factor>  
 		<axis>
 			<x>-1</x>
 			<y>0</y>
@@ -76,6 +76,37 @@
 		</axis>
 	</animation>
 
+	<animation>
+		<type>select</type>
+		<object-name>negativ-flag</object-name>
+		<condition>
+			<less-than>
+				<property>instrumentation/altimeter/indicated-altitude-ft</property>
+				<value>0</value>
+			</less-than>
+		</condition>
+	</animation>
+	<animation>
+		<type>select</type>
+		<object-name>below-1000-flag</object-name>
+		<condition>
+			<less-than>
+				<property>instrumentation/altimeter/indicated-altitude-ft</property>
+				<value>1000</value>
+			</less-than>
+		</condition>
+	</animation>
+	<animation>
+		<type>select</type>
+		<object-name>below-10000-flag</object-name>
+		<condition>
+			<less-than>
+				<property>instrumentation/altimeter/indicated-altitude-ft</property>
+				<value>10000</value>
+			</less-than>
+		</condition>
+	</animation>
+
 	<!-- barometer drum counter -->
 	<animation>
 		<type>textranslate</type>