Feature●Test indicator dovetail clamping mechanism●Dial gauges held by the 3/8" or 8mm diameter stem, or by the lug back●Rotary on/off●73 mm Base Length, 50 mm Base Width, 55 mm Base Height●100 kg magnetic pullDescription For over 60 years, SPI has introduced innovative products to the metalworking and laboratory industries. SPI measuring instruments are durable, precise, and reliable ? all backed by an Industry leading 2-Year warranty.