Spike Markers are designed to pinpoint objects buried in soil to at least one meter (3.3 ft) deep. The smaller size and diameter of the Spike Marker are ideal for shallow, narrow ducts where the Tempo Omni Marker II is impractical. Being compact, the Spike Marker is also ideal for placing alongside or inside smaller enclosures enabling easy relocation when they become overgrown.
Made of high-density polyethylene, the Spike Marker has a lifetime comparable to the equipment they are buried alongside. Spike Markers are compatible with virtually all marker locators, including the Tempo EML-100. Available with all industry-standard frequencies and color combinations.
| Application | Colour | Frequency | Model |
| Water | Blue | 145 kHz | SM18 |
| Non-Potable Water | Purple | 66 kHZ | SM11 |
