Sight Gauge Ball – Level Indicator

Sight Gauge Level Ball

Sight Gauge Ball – Level Indicator

From £2.60 £3.12

In stock
  • Easy solution to aid visual indication of your tank’s oil level
  • 1/4″ / 6.36mm Diameter
  • Suitable with the Atkinson Tankmaster sight gauges

From £2.60 £3.12

SKU: SG2000



The oil tank sight gauge level ball, aka the red pea!

Red Level indicator ball for your oil tank sight gauge. An aluminium, hollow red ball that floats on Kerosene and Diesel, brightly coloured to aid visual indication of your oil level. This product is compatible with both the Atkinson Tankmaster sight tube and the Atkinson Push Button sight tube.

Due to the process of anodising the colouring will always include 2 small clear patches or similar markings, this is normal and does not impede the function and use of the float.  The coloured anodising is primarily a visual aid and the red colour in particular will vary in shade from batch to batch.

After a while, sight gauges can cloud over due to weathering. It can be increasingly difficult to read the fuel level in your tank once this happens, which is why we offer the red pea as a solution! The brightly coloured ball will float on top of the oil which means you’ll be able to read the level of your fuel regardless of the condition of your gauge.


Another solution is to replace the PVC sight tubing, this can be supplied in 60-metre or 30-metre coils as well as in cut lengths. The price is either per coil or per metre depending on the length you require. Find this here


Cut on an angle of about 45° to prevent a vacuum from being caused when the black cap is fitted. Cut about 15mm longer than the sight shield to allow for shrinkage.

Additional information

Weight0.01 kg

21 reviews for Sight Gauge Ball – Level Indicator

  1. 5 out of 5


    Does what they say they will do.

  2. 3 out of 5


    What can I say, its a plastic ball. It does help but seems a lot of money for what it is.

  3. 5 out of 5

    R Matthews

    I found the product useable and was what I requested along with the efficient delivery service.

  4. 5 out of 5

    J Salter

    Does exactly what I wanted it to do

  5. 5 out of 5


    Just what the world needed.

  6. 5 out of 5

    A Smith

    Does everything you would expect of a small sight ball !

  7. 3 out of 5

    R Pearson

    Useful item but expensive for what it is (i.e. a tiny green ball).
    Would be better to simply be included with every Tankmaster Service kit, rather than as an expensive separate item.

  8. 4 out of 5

    R McMahon

    Can be clearly seen

  9. 5 out of 5


    Excellent. Alluminium balls not plastic

  10. 5 out of 5

    D Taylor

    Great item, makes it much easier to monitor oil usage.

  11. 4 out of 5


    Definitely a worthwhile addition to the push button sight gauge, if a little expensive for what it is. Whilst necessarily small (the size of a petit pois pea!) to fit in the tube, it is nevertheless well made, coated and finished. Priced at £2.50 + VAT though I’ve scored VFM 4⭐️ rather than 5⭐️.
    With one of these in the sight tube though it is much easier to see the exact fluid level. Take care popping it down the tube as it’s easy to drop being so small and light! For anyone using their sight gauge for water, the aluminium hollow ball floats fine in water too! The technical blurb online just says: “A ground, hollow green ball that floats on Kerosene and diesel, brightly coloured to aid visual indication of your oil level.”

  12. 5 out of 5


    It does a good job

  13. 5 out of 5

    S Armstrong

    Makes seeing the oil level easier in the tube

  14. 5 out of 5


    Does what I need it to do.

  15. 5 out of 5

    M Dineley

    It does what it says, it makes the level easily visible in the sight gauge.

  16. 5 out of 5


    Essential, but really hard to find

  17. 5 out of 5

    L Wilson

    Excellent. Super fast delivery *****

  18. 5 out of 5

    Nick R

    It works well. Pleased I bought it

  19. 5 out of 5


    Couldn’t find this product anywhere else. Perfect.

  20. 5 out of 5


    Couldn’t find this product anywhere else. Perfect.

  21. 4 out of 5

    M Davy

    Very good product

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