Item Number |
Item |
Prices |

MA-10 |
Pocket Model Comparator with 6x magnifier, case and one pair of No. 121 Reticles (no substitute) |
$48.50 |

MA-20 |
Desk Model 6 Power Comparator with 6X Magnifier and four pairs of Reticles, No. 121, 122, 123, 124 (No Substitute) in Compact Case |
63.00 |

Reticles |

MA-121 |
1/2 in. by .005 in. Div. This is the most popular scale for mechanics, toolmakers, and engineers working with decimal measurements. |

MA-122 |
15 mm by 0.1mm Div. This is the most useful scale for scientists, laboratory technicians, and others using the metric system. |

MA-123 |
Degrees. A full circle protractor with 1° divisions. A generally useful scale. |

MA-124 |
1/2 in by 64ths. Open scale and fine lines permit very accurate measurements for those preferring fractional dimensions. |

MA-125 |
Widths, Decimal inch sizes. Eighteen sizes, .001" to .050". Used in checking the width of drawn or scribed lines, slots, etc. Compare with No. 140. |

MA-126 |
Crossed lines at 90°. For quickly checking the squareness of small layouts and parts. |

MA-127 |
Holes, Fractional Inch sizes. Nine holes ranging from 1/128" to 1/8" in diameter. For checking holes, voids, flaws, etc. |

MA-128 |
Holes, Decimal inch sizes. Eighteen sizes from .001" to .050". For checking holes in spray nozzles, gas jets, ball-point pens, instruments, watches, etc. |

MA-129 |
Counting Grid, 10 x 10mm. Used in many biological sciences, for soil analysis, spray pattern studies, etc. |

MA-130 |
Inch scale for “H-O” Gauge Trains. For the adult train hobbyist making accurate scale models. |

MA-131 |
Printer Points. For printers, lithographers, advertising specialists, etc. in checking height and spacing of small type. |

MA-132 |
Thread Pitch, NM series. For checking threads in the new “miniature” series. See Reticle No. 135 for others. |

MA-133 |
Radii, Fractional inch sizes. From 1/32 in. to 3/8 in. by 1/32 in. steps. See No. 139 for decimal inch sizes. |

MA-134 |
Center Finder. For checking accuracy of centers and keyways of small shafts, layouts, etc. |

MA-135 |
Thread Pitch, NF and NC series. All threads from smallest to 20 THDS/IN in both series. See Reticle No. 132 for pitch of new NM series. |

MA-136 |
.300 in. By .002 in. Div. Similar to No. 121, but with finer divisions for still more accurate measurements. By reading on the lines or between them measurements to .001" are read. |

MA-137 |
Grid. .050" x .050" squares. First made for checking layouts and inspecting of electronic wiring boards (printed circuits). |

MA-138 |
Index Line. First made for use in comparators which are built into special layout and measuring machines. |

MA-139 |
Radii, Decimal inch sizes. A companion to Reticle No. 133. This one has decimal inch sizes while the other has fractional inch sizes. |

MA-140 |
Caliper, Decimal inch sizes. Somewhat similar to Reticle No. 125. as a feeler-gage and this one as a snap gage for miniature parts and dimensions. |

MA-141 |
Circles, inch sizes. Like No. 128 except open circles. Both fractional and decimal inch sizes. |

MA-142 |
Widths, metric sizes. Like No. 125 but with bars varying in width from 0.1mm to 2.0mm by 0.1mm increments. |

MA-143 |
Drill Points. For checking the sharpening of small drills. Shows correct point angle and lip clearance for drilling various materials. |

MA-144 |
Circles, metric sizes. Open circles like No. 141 but metric sizes from 0.1 to 2.0mm dia. by 0.1mm increments. |

MA-145 |
Pistol Bullet Holes. Scoring gage for all N.R.A. listed sizes. |

MA-146 |
Large Circles, Metric. Sizes from 1.0 to 10.0mm by 0.1mm div. See No. 144 for smaller ones. |

MA-147 |
Scales at right angles, .005" Div., preferred to No. 121 for some measurements. |

MA-148 |
Rifle Bullet Holes. Scoring gage for all N.R.A. listed sizes. |

MA-149 |
Azimuth and Bearing Circle. 1.0 degree div. Preferred over No. 123 for map reading. |

MA-150 |
Mag. Tape I.R.I.G. 7-14 track. |

MA-151 |
Mag. Tape I.R.I.G. 16 track digital. |

MA-152 |
Mag. Tape I.R.I.G. 31 track digital. |

MA-153 |
Mag. Tape In-Line 7-14 track. |

MA-154 |
Mag. Tape IBM 7 track. |

MA-155 |
Mag. Tape IBM 9 track. |

MA-156 |
Widths, Fractional Inch Sizes. Like No. 125 and No. 142 but with 12 fractional inch bars from 1/128" to 3/32" by 1/128" divisions. |

MA-157 |
Caliper, Fractional Inch Sizes. Like No. 140 but with 11 fractional inch sizes from 1/128" to 3/32" in 1/128" steps to 5/64" plus 3/32". This is a “snap gage”. |

MA-158 |
Caliper, Metric Sizes. Another “snap gage” like No. 140 and No. 157 with 13 metric sizes from .1mm to 2.0mm. Sizes are .1, .2, .3, .4, .5, .6, .8, 1.0, 1.2, 1.4, 1.6, 1.8 and 2.0mm. |

MA-159 |
Holes Metric Sizes. Like No. 127 and 128. It has 20 holes from .1mm to 2.0mm by .1mm steps. For checking small metric size holes. |

MA-160 |
Circles, Decimal Inch Sizes. Like No. 140 but includes only decimal inch size holes. 17 holes from .002" to .050" by .001" steps to .010" and by .005" to .050". |

MA-161 |
Circles, Fractional Inch Sizes. Like No. 140 but includes only fractional inch size holes. 12 holes from 1/128" to 1/8" by 1/128" to 1/4" and by 1/64" to 1/8". |

MA-162 |
Crossed Scales, Decimal Inch Sizes. Crossed lines with decimal inch scales. Vertical scale is .4" long and Horizontal scale .5" long. All scales marked to .005" increments. |

MA-163 |
Crossed Scales, Fractional Inch Sizes. Like No. 162 but marked in 1/64" increments. Vertical scale is 3/16" long and horizontal scale 1/2" long. |

MA-164 |
Crossed Scales, Metric Sizes. Crossed lines with metric scales. Vertical scale is 10mm long and horizontal scale is 14mm long. All scales marked to .1mm. |

MA-165 |
Counting Grid, Fractional Inches. Like No. 129 and No. 137 except 1/2" by 3/8" in size with 48 squares 1/16" in size. |

MA-166 |
Fine Grid, Decimal Inches. Like No. 137 but with 2000 squares .01" on a side. Overall size .4" by .5". Used for small particle counting. Accented each .05". |

MA-167 |
Fine Grid, Fractional Inches. Like No. 165 but divided into 768 squares 1/64" on a side. Overall size 3/8" by 1/2" accented each 1/16". |

MA-168 |
Fine Grid, Metric. Like No. 129 but divided into 2500 squares .2mm on a side. Overall size 10mm by 10mm accented each mm. |

MA-169 |
Large Circles, Decimal Inch Sizes. Like No. 146 but with decimal inch sizes. Sizes go from .050" to .400" by .005" increments with full circles each .050" and arcs for intermediate sizes. |

MA-170 |
Large Circles, Fractional Inch Sizes. Like No. 169 but with fractional inch circles from 1/16" to 3/8" by 1/64" increments. Full circles every 1/16" and arcs for intermediate sizes. |

MA-171 |
Radii, Metric Sizes. Like No. 133 and No. 139 but in 20 metric sizes from .5mm to 10.0mm by .5mm increments. |

MA-172 |
Parallel Lines, Decimal Inch Sizes. Parallel lines spaced .01" apart and marked each 1". This is like the counting grids without the horizontal lines. Total of 51 lines covering .5" width. |

MA-173 |
Parallel Lines, Fractional Inch Sizes. Like No. 172 but with lines spaced every 1/64" and marked every 1/8". Total of 33 lines covering 1/2" in width. |

MA-174 |
Parallel Lines, Metric Sizes. Like No. 172 and No. 173 but spaced in metric increments. There are a total of 21 lines spaced .5mm apart for a total width of 10mm. |

MA-175 |
Bore Sight Target. This reticle is the familiar crossed lines, but with a .050" dia. circle in the center to form a “bore sight” or “window” at the intersection of the lines. |

MA-176 |
L & N Strip Chart Scale. For measuring L & N strip chart recorder information. Axial scale is compressed 5% in true measure to accommodate 9.5" scale travel. The “width” scale is true measure. |

MA-177 |
Thread Pitch, Metric Sizes. Like No. 135 but with 13 metric thread pitches from .20mm to 1.00mm. Pitches increase in .5mm increments to .5mm and by .1mm increments to 1.00mm plus .75mm. |

MA-178 |
Protractor. This is another special purpose reticle originally designed for use by crime laboratories for fingerprint classification. Its unique combination of angular and linear information make it useful in other fields. |

MA-179 |
Wire Mesh Screen. The size of the many fine mesh screens used for filters and other purposes. It has sections of 12 sizes of screen. Sizes are 35, 40, 50, 60, 80, 100, 120, 150, 200, 250, 325 and 400 mesh per inch. |

MA-180 |
Runout Indicator. We call this a “Runout Indicator” since it was first used to check drill runout on flat layouts. It consists of two crossed lines at 90° with three concentric circles .050, .200 and .400 inches in diameter. |

MA-181 |
Radian Protractor. The familiar protractor divided into radians instead of degrees. There are 2π radians by .05 radian increments running counter-clockwise. |

MA-182 |
Angles. 13 discrete angles arranged in a circle. Angles shown are 1, 2, 3, 4, 5, 10, 15, 20, 25, 30, 45, 60 and 90 degrees. Has application where a protractor becomes difficult to read. |

MA-183 |
Wedge Scale, Decimal Inch Sizes. This scale provides a “vertical vernier” in the ratio of 10:1. The space between lines is exactly 1/10 the reading on the horizontal scale. The scale itself is .500" long by .005" increments. |

MA-184 |
Wedge Scale, Fractional Inch Sizes. Like No. 183 but calibrated in fractional inch sizes. The horizontal scale reads 1/2" by 1/64" increments. The vertical height is 1/10 the reading of the horizontal scale. |

MA-185 |
Wedge Scale, Metric Sizes. Like No. 183 and No. 184 but calibrated in metric sizes. The horizontal scale reads 10mm by .1mm increments. The vertical scale is 1/10 the reading of the horizontal scale. |

MA-186 |
Printers Point Rule. This scale is calibrated in printers points. It reads to 36 points by 1/2 point and can be used in place of reticle No. 131 for all measurements in this system. |

MA-187 |
Concentric Circles, Decimal Inch Sizes. Similar in purpose to No. 169 but with fewer circles arranged on a common center. Sizes range from .050" to .400" by .050". |

MA-188 |
Concentric Circles, Fractional Inch Sizes. Like No. 187 but with fractional inch circles 1/16" dia. to 3/8" dia. by 1/16" increments. |

MA-189 |
Concentric circles, Metric. Like No. 187 and No. 188 but with metric circles 1mm dia. to 10mm dia. by 1mm increments. |

MA-190 |
Squareness Check Gauge. This is a set of crossed lines at 90° with parallel lines on each side of each crossed line spaced .005" to form a plus or minus .005" tolerance for squareness checking. |

All reticle pairs, one black-line and one white-line of same
pattern, in plastic case $12.00
(not available with certification) |