Internal Micrometers

Tubular Inside Micrometers SERIES 139, 339, 140 — Extension Pipe Type:

• Wide range of inside measurements possible by combining Extension Pipes and anvils with the micrometer head.
• Carbide measuring faces.
• The sleeve is rotated to adjust the reference point adjustment when setting to a length standard.
• An inside length standard is required for accurately setting the micrometer.
• Order No. 339-101/301/302/102/303/304 features: · IP65 (water-proof) protection level that enables use in the presence of cutting fluid. · A large-character LCD display. · Storage of 2 preset values for use when setting to an inside length standard. · A function lock that prevents accidental changing of the reference setting during measurement.

Bowers’ XT3 Holematic offers a new ergonomic design – including a larger and clearer LCD display – along with IP67 electronics protection, proximity output with built-in Bluetooth; allowing bi-directional communication giving greater flexibility for data acquisition and storage. The extended
mechanical travel of the XT range means that special heads can also be manufactured to accommodate users most awkward measuring problems. Measuring heads for threads, splines slots, grooves,
deep-holes and many more applications are available on request. The Bowers XT3 range can be supplied as individual instruments or in complete sets, with UKAS certification of measuring head as standard.

Features:

• Ergonomic design with larger and clearer LCD swivel display
• IP67 Electronics
• Simple 2-button operation
• Large easy-to-read swivel display
• 4 preset memories
• Proximity output with built-in Bluetooth
• Self-centering heads
• Constant measuring pressure
• Fast, accurate measurement
• Range 2 – 300 mm (0.080″ – 12″)
• 2 – 6 mm: 2 point / 6 – 300 mm: 3 point measurement
• Resolution 0.001 mm (0.00005″)
• Tungsten carbide measuring faces on all 3-point heads from 12.5 mm
• Blind bore measurement from 2 mm – 6 mm and above 12.5 mm (0.500″)
• Extensions available above 6 mm for deep hole measurement
• Setting rings included with individual instruments and sets
• UKAS certificates supplied as standard with all pistol-grip gauges
• Serial number on all gauges and measuring heads
• Heads with special anvils available to suit specific customer requirements (e.g., Threads, grooves, 2-point, spherical, splines etc)
• Internal Micrometers manufactured according to DIN 863, part 4
• Supplied in fitted wooden case
• After Sales Service

INSIDE MICROMETERS (ECONOMIC TYPE)

• Graduation 0.01mm
• Ratchet stop
• Carbide measuring faces
• Optional accessory: setting ring (code 6312), micrometer stand and clamp (code 6301 and 6301-1) 

Microtest AG is for more than 50 years specializing in measurement of internal diameters. Microtest products are in use all over the world and guarantee the highest precision over long periods of time. The MICROTEST system is the only one that can measure internal diameters from 400 mm to 1150 mm, precisely and accurately. Based on its unique, robust design, Microtest are able to produce an instrument with unrivalled accuracy. These instruments are built very light and come with extra hard ratchets to achieve perfect self centering in a big bore. The instruments are suitable for both vertical and horizontal applications.

Available measuring ranges are: Ø400-650, Ø650-900, Ø900-1150 mm

Why use the Microtest System?

• The Microtest Measuring System reaches the high accuracy through simultaneous operation of three measuring spindles to obtain the stop point at which the measurement is taken
• A good vibration generated by the ratchet gives repeatable measurements, independent of the user‘s sense of touch
• The plastic coating protects against spray water, dirt and thermal expansion
• The temperature-compensated design enables precise & accurate measurements even if the standard ambient temperature of 20 °C is not maintained, since the material expansions of the work piece and the measuring instrument are almost completely balanced out
• Over and above this, the Microtest System is maintenance free

Features:

• Measuring Range: Ø400 – Ø1150 mm
• 1 µm reading with parallax-free readout
• Automatic self centering for easy & safe handling
• Deep blind hole measurement
• Extensions available on demand
• Insulated construction for thermal protection
• Automatic linear wear correction through easy adjustment
• Performance of higher accuracy at low cost
• High-strength aluminium housing
• Titanium-coated star housing
• Hardened chrome-steel measuring probes
• Tungsten carbide measuring anvils
• Torque-stable ratchet
• Made in Switzerland
• After sales service