--- a/pkg/models/gauge.go	Fri Jan 18 14:58:34 2019 +0100
+++ b/pkg/models/gauge.go	Fri Jan 18 15:04:53 2019 +0100
@@ -14,9 +14,6 @@
 package models
 
 import (
-	"errors"
-	"fmt"
-	"strconv"
 	"time"
 
 	"gemma.intevation.de/gemma/pkg/common"
@@ -36,41 +33,3 @@
 	Gauge           Isrs
 	LatestDateIssue time.Time
 }
-
-// Isrs represents the gauge identification data structure
-type Isrs struct {
-	CountryCode    string
-	LoCode         string
-	FairwaySection string
-	Orc            string
-	Hectometre     int
-}
-
-// IsrsFromString converts string representation of isrs code to type Isrs
-func IsrsFromString(isrsCode string) (*Isrs, error) {
-	if len(isrsCode) < 20 {
-		return nil, errors.New("ISRS code too short")
-	}
-	hm, err := strconv.Atoi(isrsCode[15:20])
-	if err != nil {
-		return nil, err
-	}
-	isrs := Isrs{
-		CountryCode:    isrsCode[0:2],
-		LoCode:         isrsCode[2:5],
-		FairwaySection: isrsCode[5:10],
-		Orc:            isrsCode[10:15],
-		Hectometre:     hm,
-	}
-	return &isrs, nil
-}
-
-// String creates a isrs code string from Isrs
-func (isrs *Isrs) String() string {
-	return fmt.Sprintf("%s%s%s%s%05d",
-		isrs.CountryCode,
-		isrs.LoCode,
-		isrs.FairwaySection,
-		isrs.Orc,
-		isrs.Hectometre)
-}