TECWERK Machinist's Calipers User Manual

Overview

The TECWERK Machinist's Calipers are precision instruments designed for accurate measurements. This manual provides detailed instructions on their operation, maintenance, and troubleshooting.

Before First Use

Dispose of used packaging material carefully or store it out of the reach of children. There is a danger of suffocation! The calipers are not a toy and do not belong in the hands of children.

General Recommendations for Use

The calipers are precision tools and should be treated with care. Do not subject them to shock or extreme mechanical stresses, and keep them clean at all times. This applies especially to the measuring surfaces, which should be cleaned before use with a lint-free cloth or leather.

Using the Fine Drive

For normal operation, both locking screws (3) and (5) should be loose. The locking screw (3) can be used to regulate the ease of movement of the slider or to lock the slider in place altogether. To use the fine drive, loosen the locking screw (3) and clamp down the fine drive with the locking screw (5) so that the measuring faces are lightly removed from the measuring object. By turning the fine drive wheel (6), you can move the slider to the measuring object very precisely, thus achieving very precise measuring results.

Turning ON and OFF

Before use, ensure all measuring surfaces are clean and free from debris. Press the ON/OFF button (9) to turn the calipers on or off. Please note that the calipers do not turn off automatically; they must always be turned off manually with the ON/OFF button (9).

Setting Zero

You can set a zero point for measurements at any position of the slider by pressing the 0/ABS button (12). Upon pressing the button, a zero point for subsequent measurements is set at the current position of the slider.

Setting Zero for Inside Measurements

The ground faces for inside measurements are 20 mm apart. Therefore, a base value of 20 mm must be set in the display. Set the value as described under "Pre-Setting a Base Value".

Absolute Measuring

Turn on the calipers and close the jaws fully. Press the 0/ABS button (12) to set a zero point at this position. "INC" is displayed.

Relative Measuring

Press the 0/ABS button (12) at any desired point to set a zero point at the current position of the slider. "INC" is displayed.

Pre-Setting a Base Value

1. While the calipers are turned on, briefly press the PRE button (10) to put the calipers into pre-setting mode. A "P" flashes in the upper right corner of the display.
2. Press and hold PRE until the first digit in the display flashes. You can now set the value between 0 and 9 by repeatedly pressing PRE briefly.
3. Press and hold PRE to switch to the next digit of the display. When you reach the last digit, press and hold PRE again until the "P" in the display starts flashing again.
4. Briefly pressing PRE again returns you to the measuring mode with the set value as the base value.

To switch to the measuring mode with the pre-set base value later, press the PRE button twice briefly in absolute or relative measuring mode to activate the pre-set value at the current spot.

Measuring with Tolerance Values

With the calipers turned on, briefly press the TOL button (13) to put the calipers into tolerance setting mode. You can now set the upper value of the desired tolerance area as described under "Pre-Setting a Base Value". A "►" is displayed at the bottom of the display. If you have previously set a value you wish to keep, press TOL briefly to switch directly to setting the lower tolerance value.

After the upper tolerance value is entered, "►" flashes at the bottom of the display. Press and hold TOL to set the lower tolerance value in the same manner as the upper tolerance value. "◄" appears or flashes at the bottom of the display. If you have previously entered a lower tolerance value that you wish to keep, press TOL briefly to switch directly to the measuring function. During tolerance measurement, "TOL" is displayed at the bottom of the display. Below the tolerance range, "◄" is displayed below the measured value, "GO" is displayed within the tolerance range, and "►" is displayed above the tolerance range.

Switching between Metric and Imperial Systems

Press the mm/in button (8) to switch between the metric and imperial systems.

Holding a Value

1. Briefly press the HOLD button (11) to hold the current measured value. Press the button briefly again to resume measuring.
2. Press and hold HOLD to enter the max value function. "MAX" is displayed at the top of the display, and the calipers show the highest value measured while the max value function was active.
3. Press and hold HOLD again to enter the min value function. "MIN" is displayed, and the calipers show the lowest value measured while the min value function was active.
4. Press and hold HOLD again to enter the delta measuring function. "Δ" is displayed, and the calipers show the difference between the lowest and highest measured values.
5. To leave the HOLD function, press and hold HOLD again until "Δ" is no longer displayed.

Resetting

If the display freezes or shows an error message, remove the battery and reinsert it after one minute.

Replacing the Battery

Open the screw securing the battery compartment cover (7) from the underside of the slider with a suitable cross-slotted screwdriver. Replace the battery with a fresh CR2032 battery. Observe correct polarity; the + pole must face up. Close the battery compartment and secure the cover with the screw. Batteries must not be charged, disassembled, thrown into fire, or short-circuited. Always use batteries of the same type and dimensions.

Maintenance and Storing

Do not use aggressive chemicals, solvents, or abrasives to clean the calipers. Do not submerge the calipers in liquids of any kind. Store the calipers in the included case in a place protected from direct sunlight, dust, humidity, extreme temperatures, and vibrations, and out of the reach of children.

Troubleshooting

Technical Data

• Measuring Range: 0 - 300 mm (2000851141), 0 - 500 mm (2000851142), 0 - 800 mm (2000851143)
• Resolution: 0.01 mm
• Accuracy: 0.04 mm (2000851141), 0.05 mm (2000851142), 0.06 mm (2000851143)
• Dimensions: 477 x 180 x 20 mm (2000851141), 676 x 248 x 25 mm (2000851142), 1132 x 248 x 25 mm (2000851143)
• Weight: 926 g (2000851141), 1230 g (2000851142), 2400 g (2000851143)
• Battery: CR2032

Disposal Information

Packaging, batteries, and electrical devices do not belong with normal household waste. As the owner, you are legally obligated to separate these materials from unsorted municipal waste and deliver them to the appropriate recycling collection site. Alternatively, you can also return them to the location where you purchased the product.

Declaration of Conformity

The NORDWEST Handel AG declares in sole responsibility that the articles Machinist's Callipers, 300 mm, article number 2000 851 141; Machinist's Callipers, 500 mm, article number 2000 851 142; Machinist's Callipers, 800 mm, article number 2000 851 143 complies with the essential requirements of the following directives and regulations: 2011/65/EU, 2014/30/EU, 2023/1542.

A complete declaration of conformity can be downloaded from this internet address: https://download.nordwest.com/datasheets

Manufacturer Information

NORDWEST Handel AG
Robert-Schuman-Straße 17
44263 Dortmund, Germany
Tel. +49 231 2222-3001
info@nordwest.com
www.nordwest-tecwerk.com