The Friendly Woolly Mammoth  The Friendly Dinosaur

Sm.OIL Oil/Water Interface Meter    
by Heron Instruments, Inc.


FREE Ground Shipping to destinations in the 48 contiguous US States.

The Sm.OIL Interface Probe fills the requirement for a SMALL low cost high quality meter for use in shallow monitoring wells. No reason to pay for what you do not need? The 60ft or 20m tape length of the Sm.OIL makes this unit the ideal unit for shallower wells. The Sm.OIL uses the same technology as the popular HERON H.01L Interface Meter. The probes are field serviceable and all the electronics are full encapsulated for durability. The tape complies with US GGG-T-106E, a recognized standard assuring you of reliable and accurate readings.

The Sm.OIL interface meter is mounted on a sturdy steel frame with an integral casing hanger. Carrying bag is included. The HERON Sm.OIL carries a 24 month no quibble warranty backed by HERON's second to none service.

The HERON Sm.OIL gives you these features:

  • Portability - Light Weight & Small
  • Accuracy - Repeatable Readings, Tape (US GGG-T-106E)
  • Durability - Encapsulated Circuitry
  • Serviceability - Field changeable probe
  • Reliability - 5-year limited warranty


  • Signal: Water - Intermittent Light & Tone, Oil - Solid Light & Tone
  • Power: One 9 Volt Battery
  • Tape: Kynar coat with stainless steel conductors
  • Dimensions: 14 1/2in X 10 1/2 in (37cm x 27cm x 19cm)
  • Weight: 4.25 lb (1.9 kilo)
  • Tape Length: 60 ft (20m)
  • Dimensions: 8in W x8in H x10in deep (10cm W x10cm H x 26cm deep)
  • Graduation: 1/100ft (1mm)
  • Probe Size: 6in x 5/8in (3/4 with shield) (150mm x 16mm) (19mm)


  • Support Kit Containing: probe, wrenches, spare battery, panel nuts and a cleaning brush ($162.00 USD).

For a full featured instrument with tape lengths greater than 60 feet (20 m), check the H.01L oil/water interface meter.



SmOIL oil/water interface meter


Sm.OIL Oil/Water Interface Meter
(Tape markings are in feet and fractions or metric units)

    Tape Length
(Either feet or meters)

Item Number

Shipping Wgt.
    60 ft or 20 m 3014FT or 3015M 7.0 pounds $820.00      

 *Prices are in U.S. Dollars

- Carrying bag is included with instrument purchase.
- Carrying bag (purchased alone) - $55.00

- Sm.OIL Support Kit - $162.00 (Includes probe, probe shield, battery,
  panel knobs, wrenches, and cleaning brush)
- Other lengths and materials available on request

- Click Here if you need to order a replacement tape and probe.
- Click Here for other Heron replacement parts.
- Click Here if you need to return a Heron Instrument for repairs.
Click here for a printable Product Brochure.



      U.S. (48 Contiguous States):

Free Ground Shipping ($25 for 2nd day air and $50 for next day air)

All other Destinations:

Please request a quote

We use Fedex, UPS, USPS, and DHL currier services.


      Our PayPal gateway is a secure online ordering system that permits payments to be transmitted in a safe environment.   We accept orders and payments by several modes indicated by the Pay and Order buttons below.   If you have additional questions about items, ordering, or shipping, do not hesitate to contact us.

  Pay with PayPal Pay by Wire Transfer  Contact Geologic Resources

  • USA:   Standard shipping for orders to locations within the 48 contiguous United States is by ground parcel service.   If more rapid delivery is required, please enquire about availability of the resource and possibility of shipment by 2nd day (additional $25) or next day (additional $50) air.
  • Hawaii, Alaska, Canada, and Mexico:   Standard shipping for orders to these destinations is by UPS.   Costs vary.   Please request a quote..
  • All Other International Destinations:   Standard shipping for orders to all other international destinations is by international air currier.   Long-air shipment is expensive and can vary widely.   Please request a shipping quote to your location.   If you provide us with your City, Country and Postal Code (where applicable) we will furnish you with a specific cost for shipment to your location.   Also a telephone number for the shipping address is required by international curriers.   

Prices and shipping charges are subject to change without notice.



Click here for Geologic Resources Home Page Click here for Geologic Resources Resources Page Click here for Geologic Resources Free Stuff Page Click here for Geologic Resources Links Page Click here for Geologic Resources Link Directory Click here for Geologic Resources Submission Page
Click here for Geologic Resources Software Page Click here for Geologic Resources Computer Store Click here for Geologic Resources Books Page Click here for Geologic Resources Auctions Links Page Click here for Google Search Engine Click here for Yahoo Search Engine and Links
1998-, Geologic Resources, All Rights Reserved

Tools  Online Tools