Piedrujas street 11, ofiss 214, Riga, Latvia, LV-1073
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Calibration bench for certification of equipment such as ring gauges and thread plug gauges. Its small dimensions and highly precise measuring system make it the ideal instrument for a mobile calibration station.

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The horizontal THV instrument has been designed for calibration and certification of gauging equipment of small dimension.

It allows easy and precise checking of plug gauges, ring gauges, thread plug gauges, test and dial indicators as well as measuring of high precision production parts.

The incorporated opto-electronic measuring system guarantees high accuracy. A separate display unit or a PC with Trimos WinDHI software can be used to display the measurement results.

The THV instruments can also be delivered without measuring system. An electronic probe or a dial indicator shall then be used as measuring system.

Due to its small size, The THV can be moved easily. It is therefore frequently used as mobile calibration station.


Absolute measuring range mm (in)  50 (2)
Application range (external measurements) mm (in) 100 (4)
Application range (internal measurements) mm (in) 100 (4)
Max. permissible errors µm 0.2 + L(mm)/250
Repeatability (2s) µm 0.1
Resolutions (depending on display unit) mm (in) 0.1 ÷ 0.00001 (.0001 ÷ .0000001)
Measuring force (adjustable) N 0 ÷ 4
Operational temperature °C  +10 ÷ +40
Temperature of storage °C -10 ÷ +40
Weight kg 22