Thermco GW054HL Precision Astm/Api Hydrometer, Combined form, Astm 54Hl, 29 To 41 Degree Api Range, 0.1 Degree Division, 0 To 150 Degree F Thermometer, glass
</br></br>

</br></br></br></br></br></br></br></br></br></br>

</br></br></br></br></br></br></br></br></br></br>
<img src='http://ecx.images-amazon.com/images/I/31CkkC479AL.jpg'></br>