Gaming Accessories › Saltire Games Combat Gauge | 40k Tool | Onyx Edition Image 1 of 1 Saltire Games Combat Gauge | 40k Tool | Onyx Edition £2.99 Simple combat gauge cut from acryllic. With the New Onyx Edition for Easy Table top Reading Marks out 1/2 inch, 1inch, 2 inch and 3 inch. Quantity: Add To Cart Added! Simple combat gauge cut from acryllic. With the New Onyx Edition for Easy Table top Reading Marks out 1/2 inch, 1inch, 2 inch and 3 inch.