Portable measuring microscopes

Portable measuring microscopes

Ideal for precise depth measurement & field inspection

Prism Optical portable measuring microscopes accurately and precisely measure small specimen.

They are commonly used for:

  • measuring depth of cracks or structures (metal or concrete failure analysis)
  • particle size and quantity in a medium (metal particles in oil)
  • workshop inspection (inspection of machined parts)
  • high magnification of field microscopy and
  • simply inspecting fluorescing materials (glues, insects, etc).

How to use

  • Turn on the illuminator (torch)
  • Focus on the top of the specimen
  • Adjust the scale ring on top of the focus knob so that it reads ‘0’, or note what this starting reading is
  • Re-focus on the point of interest (depth reading)
  • Note the new position on the focus ring scale
  • Subtract the starting reading from the depth reading to get the reading
  • Multiply the scale factor (from the graticule) by the total magnification to get the multiplier
  • Multiply this by the multiplier by the reading
  • This is the total depth in the units used in the scale factor

Example using a 100× Portable Measuring Microscope

  1. Top of the artefact: 0
  2. Bottom of the artefact: 2.7
  3. Scale factor: 0.01mm
  4. Total magnification: 10x
[reading]		= [ending focus reading][2] - [starting focus reading][1]
				= 2.7 - 0

[multiplier] 	= [scale][3] ⨉ [magnification][4]
				= 0.01mm ⨉ 100
				= 1.00mm

[depth] 		= [reading] ⨉ [multiplier]
				= 2.7 ⨉ 1.00mm
				= 1.0mm

The options

100⨉ microscope

0.01mm scale

60⨉ microscope

0.05mm scale

40⨉ microscope

0.05mm scale

20⨉ microscope

0.1mm scale

Technical specifications

Magnification
Model Total Objective Eyepiece Graticule scale factor Eyepiece FOV Objective NA
M-PORT–100 100× 10× 10× 0.01mm / 0.0005" ~12mm 0.29
M-PORT–60 60× 10× 0.05mm / 0.001" ~12mm 0.25
M-PORT–40 40× 10× 0.05mm / 0.001" ~12mm 0.19
M-PORT–20 20× 10× 0.1mm / 0.005" ~12mm 0.12

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