diff --git a/tailbone/templates/tempmon/probes/graph.mako b/tailbone/templates/tempmon/probes/graph.mako
index 795af145..412f25dd 100644
--- a/tailbone/templates/tempmon/probes/graph.mako
+++ b/tailbone/templates/tempmon/probes/graph.mako
@@ -39,7 +39,13 @@
         </b-field>
 
         <b-field horizontal label="Showing">
-          ${time_range}
+          <b-select v-model="currentTimeRange"
+                    @input="timeRangeChanged">
+            <option value="last hour">Last Hour</option>
+            <option value="last 6 hours">Last 6 Hours</option>
+            <option value="last day">Last Day</option>
+            <option value="last week">Last Week</option>
+          </b-select>
         </b-field>
 
       </div>
@@ -86,7 +92,9 @@
             this.chart.destroy()
         }
 
-        this.$http.get('${url('{}.graph_readings'.format(route_prefix), uuid=probe.uuid)}', {params: {'time-range': timeRange}}).then(({ data }) => {
+        let url = '${url(f'{route_prefix}.graph_readings', uuid=probe.uuid)}'
+        let params = {'time-range': timeRange}
+        this.$http.get(url, {params: params}).then(({ data }) => {
 
             this.chart = new Chart(this.$refs.tempchart, {
                 type: 'scatter',
diff --git a/tailbone/views/tempmon/probes.py b/tailbone/views/tempmon/probes.py
index 6d12a3d2..381a9f4a 100644
--- a/tailbone/views/tempmon/probes.py
+++ b/tailbone/views/tempmon/probes.py
@@ -26,12 +26,11 @@ Views for tempmon probes
 
 import datetime
 
-from rattail.time import make_utc, localtime
 from rattail_tempmon.db import model as tempmon
 
 import colander
 from deform import widget as dfwidget
-from webhelpers2.html import tags, HTML
+from webhelpers2.html import tags
 
 from tailbone import forms, grids
 from tailbone.views.tempmon import MasterView
@@ -258,27 +257,16 @@ class TempmonProbeView(MasterView):
             selected = self.request.session.get(key, 'last hour')
         self.request.session[key] = selected
 
-        range_options = tags.Options([
-            tags.Option("Last Hour", 'last hour'),
-            tags.Option("Last 6 Hours", 'last 6 hours'),
-            tags.Option("Last Day", 'last day'),
-            tags.Option("Last Week", 'last week'),
-        ])
-
-        time_range = HTML.tag('b-select', c=[range_options.render()],
-                              **{'v-model': 'currentTimeRange',
-                                 '@input': 'timeRangeChanged'})
-
         context = {
             'probe': probe,
             'parent_title': str(probe),
             'parent_url': self.get_action_url('view', probe),
-            'time_range': time_range,
             'current_time_range': selected,
         }
         return self.render_to_response('graph', context)
 
     def graph_readings(self):
+        app = self.get_rattail_app()
         probe = self.get_instance()
 
         key = 'tempmon.probe.{}.graph_time_range'.format(probe.uuid)
@@ -299,7 +287,7 @@ class TempmonProbeView(MasterView):
             raise NotImplementedError("Unknown time range: {}".format(selected))
 
         # figure out which readings we need to graph
-        cutoff = make_utc() - datetime.timedelta(seconds=cutoff)
+        cutoff = app.make_utc() - datetime.timedelta(seconds=cutoff)
         readings = self.Session.query(tempmon.Reading)\
                                .filter(tempmon.Reading.probe == probe)\
                                .filter(tempmon.Reading.taken >= cutoff)\
@@ -308,7 +296,7 @@ class TempmonProbeView(MasterView):
 
         # convert readings to data for scatter plot
         data = [{
-            'x': localtime(self.rattail_config, reading.taken, from_utc=True).isoformat(),
+            'x': app.localtime(reading.taken, from_utc=True).isoformat(),
             'y': float(reading.degrees_f),
         } for reading in readings]
         return data