product

Snap gauge

Snap gauge photo

Snap gauge photo

Single-plate snap gauge

(mm)

Nominal dimension D B L T b1 b2 a1 a2 c r e
3or more 6or less 30 50 4 10 22 11 3 3 3 -
More than 6 10 or less 36 60 11 23 12 5
More than 10 14or less 50 12 28 18 4 4
More than 14 18or less 60 70 13 32 25
More than 18 24or less 65 14 34 28 5
More than 24 30or less 75 80 5 15 36 34 5
More than 30 40or less 90 90 17 40 22 24
More than 40 50or less 110 100 19 43 28 30

C-shaped snap gauge

(mm)

Nominal dimension D B L T I R1 b1 b2 a e
50or more 65or less 120 100 6 36 36 18 35 15 55
More than 65 80or less 142 114 41 45 19 38 18 69
More than 80 100or less 162 130 45 55 20 40 20 88
More than 100 120or less 192 150 8 51 65 22 44 22 106
More than 120 140or less 218 164 54 75 23 46 126
More than 140 160or less 236 180 58 85 24 48 25 143
More than 160 180or less 258 195 60 95 25 52 163
More than 180 200or less 280 210 62 105 55 184
More than 200 225or less 308 230 64 115 26 58 205
More than 225 250or less 338 244 68 130 28 231
More than 250 280or less 362 262 70 143 28 60 291
More than 280 315or less 392 275 72 160 291

Details

Use If the object passes through the large hole and is stopped at the small,
it is considered to be of acceptable size.
Type

Single-plate snap gauge
Under 50 with a single plate.

Double-plate snap gauge
Under 50 with double plates (For objects that can't be measure with single-plate gauges)

C-shaped snap gauge
Size over 50

Groove diameter snap gauge
For measurement in small spaces

Materials,
surface
processing
Partially-glazed finishing・・・SK5 Super sub-zero HRC58~63
Fully-glazed finishing・・・SKS3 Super sub-zero HRC58~63
*We also produce carbide finished versions.
Points of caution
when ordering
Please be sure to specify limit dimensions (maximum, minimum) (h7, ±0.2, etc.)
We can handle special orders as well. Please specify via a diagram, etc.

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Cylindrical plag gauge

Cylindrical plag gauge

Cylindrical plag gauges

(mm)

Nominal dimensionD Pass side Stop side m L
K1 L1 K2 L2
1or more 3or less 7 25 3.5 25 4 58.5
More than 3 6or less 10 32 5 32 6 77
More than 6 10or less 12 37 7 37 101
More than 10 14or less 13 107
More than 14 18or less 17 42 10 42 119
More than 18 24or less
More than 24 30or less 22 52 13 52 8 141
More than 30 40or less 25 60 60 9.5 157
More than 40 50or less

Details

Use Evaluates the margin of error for a hole using the smallest and largest sizes.
Type

A limit plug gauge is that which smoothly passes through the entrance and is stopped at the end. Master plug gauges are used as examples for the proper width.

Limit plug gauge
This will allow the smallest diameter of the hole to pass, while stopping the largest.
We have both single and double-plane versions.

Master plug gauge
Acts to set the standard of hole size.

Materials,
surface
SKS3 Super sub-zero HRC58~63
*We also produce carbide finished versions.
Points of caution
when ordering
For limit plug gauges, please be sure to include the tolerance, such as H7, +0.2/0, etc. of the item to be measured.
For non-standard single-plated plug gauges, please specify the necessary length (length of work).
We can handle special orders for items other than the standard ones shown above. Please provide your specifications using a diagram, etc.

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Link gauges

Link gauges photo

Ring gauges

(mm)

Nominal dimensionD External
diameter
Thickness Display of stopping side
More than or less D1 K a b
1or more 2.5 22 4 0.6 0.6
2.5 5 5
5 10 32 8 1 0.8
10 15 38 10 2 1
15 20 45 12
20 25 53 14
25 32 63 16
32 40 71 18 3 1.5
40 50 85 20
50 60 100 24
60 70 112
70 80 125
80 90 140
90 100 160

Tolerance of master ring creation

Size Common difference Size Common difference
~32 ±0.0015 ~200 ±0.004
~50 ±0.002 ~250 ±0.006
~100 ±0.0025 ~300 ±0.007
~150 ±0.003  

Details

Use To match the standards (0 set) of cylinder gauges and 3 piece micrometers
Type

Master ring
For limit ring gauges

Materials,
surface
SKS3 Super sub-zero HRC58~63
*We also produce carbide finished versions.
Points of caution
when ordering
For limit ring gauges, please be sure to include the tolerance, such as H7, +0.2/0, etc. of the item to be measured.
The master rings are generally mde to tolerances in the chart, but can be made more stringent on request.
We will also produce unique products on request.
Please specify your request using diagrams, etc.

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Parallel screw limit gauges

Parallel screw limit gauges photo

Details

Use To manage the limits (maximum/minimum size) of product screws by stopping or allowing them to pass.
Type

Thread plug gauge
Used to evaluate tap holes, etc.

Thread ring gauge
To evaluate male threads.

Standard thread gauge
The thread plug gauge and thread ring gauge match up to become a set, made to the specifications of the standard diameter of the thread. However, it cannot be used to determine the matching up of two elements.

System ISO Grading System…No differentiation between work and measurement. Evaluation is determined by whether or not the thread can be turned more than twice at the stopping side.

JIS 1,2,3 Grading System…Evaluation is determined by whether or not the thread can be turned more than twice at the stopping side.
Materials,
surface
SKS3 Super sub-zero HRC58~63
Points of caution
when ordering
As there are many types of thread gauge, please specify the thread format, such as S, UNF, UNC, SM, etc.
We will also produce unique products on request. Please specify your request using diagrams, etc.

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tapergauges

tapergauges photo

National taper gauge

(mm)

  Dimensions of taper part taper
α/2
NT10 15.875 9.525 21.770 1.6 23.370 36 8°17′49.7″
NT20 22.225 12.700 32.657 34.257 50
NT25 25.400 13.818 39.711 41.311 55
NT30 31.750 17.467 48.971 50.571 55
NT35 38.100 21.431 57.150 58.750 65
NT40 44.450 25.400 65.316 66.916 72
NT45 57.150 32.610 84.138 85.738 90
NT50 69.850 39.676 103.454 3.2 106.654 105
NT55 88.900 50.469 131.763 134.963 130
NT60 107.950 60.722 161.925 165.125 160

Morse taper gauge

(mm)

  Dimensions of taper part taper
  D d L a C α/2
NK-MYN00 9.045 6.401 55 3.2 50.8 1°29.4472′
NK-MYN01 12.065 9.371 58.5 3.5 54 1°25.7231′
NK-MYN02 17.78 14.533 70 4 65 1°25.8416′
NK-MYN03 23.825 19.759 86.6 4.5 81 1°26.2624′
NK-MYN04 31.267 25.907 109.8 5.3 103.2 1°29.2548′
NK-MYN05 44.399 37.468 139.4 6.3 131.7 1°30.4366′
NK-MYN06 63.348 53.749 193.5 7.9 184.1 1°29.5984′
NK-MYN07 83.058 69.85 265.1 9.5 254 1°29.3442′

Details

Type Morse taper, National taper, Jacobs taper etc.
Points of caution
when ordering
Plese specify /N taper gauges with ΦD or C(L), and full size (half size) taper gauges with φD, α(α/2), C(L).
It is not possible to produce only a taper gauge. We can only produce them as a set with a plug gauge.
It is also possible to produce them if you have an example to follow.

We can also handle special tapers. Please provide your specifications using a diagram, etc.

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Jigs/Other

If we can receive specification diagrams, we are able to produce various jigs and other special gauges. Also if you have requests such as wanting to measure something for which you have no diagram, or wanting a gauge that is easier to use than your current one, we are capable of designing and producing new ones, so please confer with us.

Jigs/Other photo

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