REPAIRS: Long Island Indicator Service is an authorized repair service, fully qualified to perform professional repairs on Standard Gage and Dorsey dial bore gages. SALES: The newest models of Standard Gage dial bore gages are manufactured in Switzerland by Tesa, the manufacturers of high-end Etalon, Compac and Interapid gages. Dorsey (USA) makes an excellent look-alike with the same specifications. The same indicator is used for Size 2, 3, 4, and 5 dial bore gages. A slightly larger version is used for bore gage size 6. A simple hex screw will fasten it to your various measuring heads. If you don't use more than one head at a time, you can save some money by using one indicator for all your measuring heads. You might also want to buy a new indicator simply to replace an old or defective indicator. Perhaps you want to replace the obsolete "made in Poughkeepsie" indicator with the new model made in Switzerland/Germany. You can also convert your metric bore gage to inch and vice-versa. Digital versions are also available with the option of converting your dial bore gage into a digital electronic gage. 
Standard Bore Gage indicator model D1-20241-B-1 made in Europe Your dial bore gage indicator consists of everything shown in the accompanying photo. Simply unscrew the hex nut, insert your measuring head, and hand tighten. Don't use tools other than a hex wrench to tighten the screw because you'll invariably over tighten and ruin the thread, in which case you'll end up having to buy another indicator. Also available: spare parts for the bore gage indicator including crystals and other easily replaced parts.
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