Add hands

macrovision.js

@@ -455,6 +455,12 @@ math.createUnit("townships", {
     aliases: ["township", "surveytownships", "surveytownships"]
 });
 
+math.createUnit("hands", {
+    definition: "4 inches",
+    prefixes: "long",
+    aliases: ["hand", "hands"]
+});
+
 //#endregion
 
 const defaultUnits = {
@@ -513,6 +519,7 @@ const unitChoices = {
             "ShoeSizeUK",
             "ShoeSizeMensUS",
             "ShoeSizeWomensUS",
+            "hands",
             "stories",
             "buses",
             "marathons",