Our range of precision instruments for measuring length is manufactured by United Precision Machine, Inc (UPM®), a Chinese company with ISO9000/2000 QMC rating and CE. The company is specialised in the design and production of a large range of such instruments. UPM strive for highest accuracy, durability and overall quality at remarkably low prices. The company has introduced such innovations as 3 and 5 point calipers and holds many patents. It is our aim to keep most of these items in stock.

All of the instruments read in either metric or imperial and may be used for conversions.
A battery saving feature turns the display off after 4 minutes of non-use. When pressing "on" again to re-activate, the display returns to the original reading.
Also, a port is provided to enable data transmission to a computer file or printer, via a special connector cable.

We offer a one year warranty on these instruments.

For some applications a measuring magnifier (magnifier with graduated reticle) may be most useful. Some reticles measure angles and screw-pitch too. We also supply measuring microscopes, please email us with your requirements.

DIGITAL CALIPERS, ABSOLUTE/ RELATIVE ZERO
After a particular reading is "zeroed" a subsequent measurement is shown as the difference. The zero function does not hold the reading in memory, as does the ABS/REL.
The first measurement when "ABS" is pressed is placed in memory. Then a second reading may be taken, which is shown as a difference. Press ABS again and the second setting is placed into memory, overwriting the previous reading.
Supplied in foam lined plastic box.

Functions: on/off, mm/inch selection, ABS and zero settings
Resolution: 0.01mm
Accuracy: ± 0.02 - 0.04mm
Repeatability: 0.01mm
Max. measurement speed: 1.5m/s
Operating temperature: 0°C to +40°C
Storage temperature: -10°C to +60°C
Power supply: silver oxide cell (SR44) battery 1.5V
Battery lasts for one year of continuous use; three years is usual.

SUC23-150 Digital caliper, absolute/relative zero, 150mm AUD56.00 Available
SUC23-200 Digital caliper, absolute/relative zero, 200mm AUD72.00 Available
SUC23-300 Digital caliper, absolute/relative zero, 300mm AUD99.00 Available

DIGITAL CALIPER, WATER RESISTANT
These calipers are highly water and dust resistant - IP67. Supplied in a sturdy plastic box.

Functions: on/zero, mm/inch selection
Dust/water protection: IP67 (immersion up to 1m)
Resolution: 0.01mm
Accuracy: ± 0.02mm
Repeatability: 0.01mm
Max. measurement speed: 1.5m/s
Operating temperature: 0°C to +40°C
Storage temperature: -10°C to +60°C
Power supply: silver oxide cell (SR44) battery 1.5V
Battery lasts for one year of continuous use; three years is usual.

SUC3-150 Digital caliper, water resistant, 150mm AUD92.00 Available
SUC3-200 Digital caliper, water resistant, 200mm AUD161.00 Available
SUC3-300 Digital caliper, water resistant, 300mm AUD191.00 Available

DIGITAL CALIPER, MULTIPLE POINTS
The diameter of cutting tools with three or five flutes can not be measured with conventional calipers. These multiple point calipers make that measurement simple and accurate.
Supplied in a foam lined plastic box.

Functions: on/off, mm/inch selection, origin setting
Resolution: 0.01mm
Accuracy: ± 0.05mm
Max. measurement speed: 1.5m/s
Operating temperature: 0°C to +40°C
Storage temperature: -10°C to +60°C
Power supply: silver oxide cell (SR44) battery 1.5V
Battery lasts for one year of continuous use; three years is usual.

SUC4-3P Digital caliper, 4-40mm, 3 point AUD91.00 Available
SUC4-5P Digital caliper, 1-40mm, 5 point AUD91.00 Available

DIAL CALIPER, METRIC/IMPERIAL
Stainless steel dial caliper with 2 hands, indicating mm and inches. Measures ID, OD, depth and step.  Dial can be rotated for differential measurements. Pointer rotates 180° for 1mm.  The caliper has 2 locking screws, one for the dial and one for the slide.
Supplied in foam lined plastic box.

Range: 0 - 150mm
Resolution: 0.02mm
Accuracy: ± 0.03mm
Dimensions: Length 234mm, dial 40mm, height 16mm, slide thickness 3.3mm

SUC52-150 Dial caliper, metric/imperial, 150mm AUD45.00 Available

DIGITAL INDICATORS, 3 FUNCTIONS
Digital indicators with large display and data output. SUI21-25 is supplied in a foam lined plastic box, SUI21-50 in a foam lined wooden box. Separate lug back-plate included.

Functions: on/off, zero, mm/inch selection
Range: 0-25 or 50mm
Resolution: 0.01mm
Total tolerance: 0.04mm
Return tolerance: 0.01mm
Repeatability: 0.01mm
Measuring force: <4N
Measuring speed: 1.5m/s (accuracy 0.01mm), 0.3m/s (accuracy 0.001mm)
Operating temperature: 0°C to +40°C
Storage temperature: -20°C to +60°C
Power supply: silver oxide cell battery 1.5V
Data output

SUI21-25 Digital indicator, 25mm, 3 functions AUD71.00 Available
SUI21-50 Digital indicator, 50mm, 3 functions AUD143.00 Available

DIGITAL INDICATORS, 4 FUNCTIONS
Digital indicators with large display and data output. Supplied in a foam lined plastic box. Separate lug back-plate included.

Functions: on/off, zero, mm/inch selection, +/- selection of measuring direction
Range: 0-12.5 or 25mm or 50mm
Resolution: 0.01mm
Total tolerance: 0.03mm
Return tolerance: 0.01mm
Repeatability: 0.01mm
Measuring force: <2N
Operating temperature: 0°C to +40°C
Storage temperature: -10°C to +60°C
Power supply: silver oxide cell battery, SR44, 1.5V
Data output

SUI22-12 Digital indicator, 12.5mm, reversal of measuring direction AUD68.00 Available
SUI22-25 Digital indicator, 25mm, reversal of measuring direction AUD84.00 Available
SUI22-50 Digital indicator, 50mm, reversal of measuring direction AUD156.00 Available

DIGITAL INDICATORS, 5 FUNCTIONS
Digital indicators with large display and data output. SUI23-12, SUI23-25, SUI23-50 are supplied in a foam lined plastic box. SUI23-50 has a separate lug back-plate included.

Functions: on/off, zero, mm/inch selection, tolerance, ABS/INC
Range: 0-12.5 or 25mm or 50mm
Resolution: 0.01mm
Total tolerance: 0.03mm
Return tolerance: 0.01mm
Repeatability: 0.01mm
Measuring force: <2N
Operating temperature: 0°C to +40°C
Storage temperature: -10°C to +60°C
Power supply: silver oxide cell battery, SR44, 1.5V
Data output

SUI23-12 Digital indicator, 12.5mm, ABS/INC/TOL AUD59.00 Available
SUI23-25 Digital indicator, 25mm, ABS/INC/TOL AUD72.00 Available
SUI23-50 Digital indicator, 50mm, ABS/INC/TOL AUD121.00 Availability

DIGITAL INDICATOR, HIGH RESOLUTION, 4 FUNCTIONS
Digital indicator with large display, high resolution and data output. Supplied in a foam lined plastic box. Separate lug back-plate included.

Functions: on/off, zero, mm/inch selection, +/- selection of measuring direction
Range: 0 - 12.5mm
Resolution: 0.001mm
Total tolerance: 0.015mm
Return tolerance: 0.003mm
Repeatability: 0.003mm
Measuring force: 0.5N - 1.5N
Force hysteresis: <0.5N
Maximum measuring speed: 0.3m/s
Operating temperature: 0°C to +40°C
Storage temperature: -10°C to +60°C
Power supply: silver oxide cell battery, SR44, 1.5V
Data output

SUI32-12 Digital indicator, 12.5mm, high res., reversal of measuring direction AUD60.00 Available

DIGITAL INDICATOR, HIGH RESOLUTION, 5 FUNCTIONS
Digital indicator with large display, high resolution and data output. Supplied in a foam lined plastic box. Separate lug back-plate included.

Functions: on/off, zero, mm/inch selection, tolerance, ABS/INC
Range: 0 - 12.5mm
Resolution: 0.001mm
Total tolerance: 0.015mm
Return tolerance: 0.003mm
Repeatability: 0.003mm
Measuring force: 0.5N - 1.5N
Force hysteresis: <0.5N
Maximum measuring speed: 0.3m/s
Operating temperature: 0°C to +40°C
Storage temperature: -10°C to +60°C
Power supply: silver oxide cell battery, SR44, 1.5V
Data output

SUI33-12 Digital indicator, 12.5mm, high resolution, ABS/INC/TOL AUD72.00 Available

DIGITAL MICRON INDICATOR, HIGH RESOLUTION, 3 FUNCTIONS
Supplied in a foam lined plastic box.

Functions: on/off, zero, mm/inch selection
Range: 0 - 12.5mm
Resolution: 0.001mm
Accuracy: 0.003mm - 0.005mm
Maximum measuring speed: 0.6M/S
Operating temperature: 0°C to +40°C
Storage temperature: -10°C to +60°C
Power supply: Environment-friendly 3V lithium ion cell
Data output

SUI52-12 Digital indicator, 12.5mm, accuracy 0.005mm AUD93.00 Available

DIGITAL DEPTH INDICATOR, 3 FUNCTIONS
Wide probing range is available with the included extension rod, 20mm, 40mm, 60mm, 80mm. Hardened stainless steel base. Supplied in a foam lined plastic box.

Functions: on/off, zero, mm/inch selection
Range: 0-210 or 220mm
Stroke: 0 - 12.5 or 25mm
Resolution: 0.01mm
Accuracy: ± 0.02mm
Operating temperature: 0°C to +40°C
Storage temperature: -10°C to +60°C
Power supply: 3V CR2025 (lithium ion cell)
Data output

SUI612-050 Digital depth indicator, 12.5mm, base 50mm AUD123.00 Available
SUI612-100 Digital depth indicator, 12.5mm, base 100mm AUD125.00 Available
SUI625-050 Digital depth indicator, 25mm, base 50mm AUD139.00 Available
SUI625-100 Digital depth indicator, 25mm, base 100mm AUD144.00 Available

DIGITAL TEST INDICATOR
The test indicator measures small lateral displacements highly accurately. The probe is not retractable, but the displacement of the ruby tip results in the reading. The instrument can be used to measure in narrow grooves and small bores.

Functions: on/off, zero, mm/inch selection, tolerance
Range: 0.5mm
Resolution: 0.001mm
Accuracy: 0.009mm
Positive and negative measurement 0-180° adjustable measuring head
Power supply: silver oxide cell battery, SR44, 1.5V
Data output
Ruby ball head

SUI4 Digital test indicator, accuracy 0.009mm, 3 functions AUD126.00 Available

DATA TRANSMITTER FOR CALIPERS AND INDICATORS

Features

• Work/storage environment: 0-40°C
• Computer system: Window 98 SE, Windows XP, Windows Vista, Windows 7;
• Computer connector: standard USB port, wire length 2m.
  Measuring tool connector: standard 2.5mm ⌀ four contact plug; "D/C/V/G" corresponding "Data/Clock/Vdd/Get", wire length 1.8m;
  Foot switch jack: standard 2.5mm ⌀ for a two-contact jack
• Net weight/gross weight - 100g/400g
• Data Transmitter interfaces with calipers and indicators; it is not suitable for micrometers
• Supplied with user manual
• Open end user software (any literal software which can be entered via keyboard), such as Excel, Word, TXT, etc.

SU-DT Data transmitter for UPM calipers and indicators AUD127.00 Available

DIGITAL MICROMETERS
Digital external micrometers with large display and data output. Supplied in a foam lined plastic box with calibrating bar and spanner for battery replacement. The calibrating bar can also be used for making smaller measurements.
After a particular reading is "zeroed" a subsequent measurement is shown as the difference. The zero function does not hold the reading in memory as does the R/A/REL. When a reading is placed in "hold" the measurement is retained even when the calipers are moved or when the calipers are switched off. Pressing "hold" again resumes normal functions.
The upper and lower tolerance may be set and while the reading is within the tolerance, "OK" is shown. Otherwise an up or down error indicates when the tolerance is exceeded.
The first measurement when "R/A" is pressed is placed in memory. Then a second reading may be taken, which is shown as a difference. Press R/A again and the second setting is placed into memory overwriting the previous reading.
Reset brings any reading to zero, however, when reset is held and the + or - sign is also pressed any reading may be entered and this new value becomes the value of "reset". That new value may be zeroed by holding "reset" and pressing + or - buttons until zero is reached. The +/- buttons speed up when held.
The blue mm/inch conversion button functions as the "on" button. "Off" is automatic after 4 minutes of non-use, but pressing the conversion button restores the last setting.
A locking lever locks the micrometer screw.

SUM2-025 functions have been changed. They now include: ASB/inch/mm selection and OFF/ON/ZERO/SET.

Functions: mm/inch selection, tolerance indication, absolute/relative zero (reset), data hold, data output.
Resolution: 0.001mm
Accuracy: 0.002 - 0.003mm
Range: 0 - 25mm, 25 - 50mm, 50 - 75mm, 75 -1 00mm
Power: auto on/off
Power supply: silver oxide cell battery 1.5V
Operating temperature: 0 to +40°C
Storage temperature: -20°C to +70°C
Humidity: no influence up to RH 80%

SUM2-025 Digital micrometer, 0-25mm AUD83.00 Available
SUM2-2550 Digital micrometer, 25-50mm AUD94.00 Available
SUM2-5075 Digital micrometer, 50-75mm AUD136.00 Available
SUM2-75100 Digital micrometer, 75-100mm AUD139.00 Available