TESA Isomaster Micrometer

Metric micrometers made in Switzerland

Swiss made TESA micrometers are undisputably among the finest available. They have a friction sleeve which lies a bit better in the hand, making one handed operation easier for some. They also have slanted lines on the barrel and that may be a deciding factor when investing in these. Some people can't tolerate those slants. Others have found out that they're easier on the eyes. If you're not sure on this point, select another micrometer such as [Etalon Series 260], made by the same manufacturer.


Metric models are available up to 300 mm. They are almost never in stock in the US. If you place an order online, delivery has to be assumed to be 4-6 weeks.

  • Swiss made
  • tungsten carbide anvils
  • 6.5 mm anvil diameter on 100 mm models and smaller
  • 8 mm anvil diameter on 100 mm models and larger
  • 0.01 mm discrimination
  • friction maximum force 10N
  • durable plastic case
  • friction sleeve can be reversed to render it inactive
  • ID (serial number) for easy ISO compliance
  • manufacturer's calibration report with declaration of conformity

Inch reading models were discontinued in 2016. Repairs may still be possible. Refer to page 30 for details.

Range TESA Model No. (TESA Order No.) Price US$ Availability
0-100 mm (set of 4) 01.10113 (00110113) inquire about 6 weeks
0-25 mm 01.10101 (00110101) inquire about 6 weeks
25-50 mm 01.10102 (00110102) inquire about 6 weeks
50-75 mm 01.10103 (00110103) inquire about 6 weeks
75-100 mm 01.10104 (00110104) inquire about 6 weeks
100-125 mm 01.10105 (00110105) inquire about 6 weeks
125-150 mm 01.10106 (00110106) inquire about 6 weeks
150-175 mm 01.10107 (00110107) inquire about 6 weeks
175-200 mm 01.10108 (00110108) inquire about 6 weeks
200-225 mm 01.10109 (00110109) inquire about 6 weeks
225-250 mm 01.10110 (00110110) inquire about 6 weeks
250-275 mm 01.10111 (00110111) inquire about 6 weeks
275-300 mm 01.10112 (00110112) inquire about 6 weeks

Manufacturer suggestions (paraphrased): Check your Tesa micrometer periodically to see that the zero lines up. Use a gage block to verify readings.

After heavy or prolonged use, it is recommended that the micrometer be cleaned as follows: unscrew the quick-drive end cap, as well as the thimble. Clean each part with an appropriate liquid (alcohol, naphtha) and reassemble. Lightly lubricate the spindle with a high quality oil. Eliminate any play in the thread by using the supplied setting key.

A more detailed maintenance brochure comes with the micrometers.

Further information on micrometers in general, and what can go wrong, is shown on page 29. If your micrometers ever need servicing, Long Island Indicator has over 60 years of experience with TESA micrometers.


Slanted lines keep the graduation numbers visible

There is no question that Amazon can offer you the best prices on almost every kind of precision measuring tool. They also offer easy no-questions-asked returns and often free shipping. The small distributor simply cannot compete. That's why we include this link so you can go directly to Amazon and see what they're offering.

Two things to consider:

  • Amazon product photos sometimes don't match the product description. It's the description that you want to pay attention to.
  • There are imitation gages on the market (specifically Mitutoyo) and you can make sure you are getting the real item by looking for the words "sold by Amazon". If it is sold by a third party, you might want to call Mitutoyo to find out if they are legitimate distributors.

Companion Reference Guide for Test Indicators
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