Semi-automatic recorder for filar micrometer eyepiece and its application to track measurement

B. Stiller; P. I. Louckes

doi:10.1007/bf02745389

Automatic recorder for height of kennelly-heaviside layer

Journal of the Franklin Institute ◽

10.1016/s0016-0032(31)90504-8 ◽

1931 ◽

Vol 212 (6) ◽

pp. 798-799

Keyword(s):

Automatic Recorder

Wing Folding in Lepidoptera

The Canadian Entomologist ◽

10.4039/ent96148-1 ◽

1964 ◽

Vol 96 (1-2) ◽

pp. 148-149 ◽

Cited By ~ 5

Author(s):

Janet Sharplin

Keyword(s):

Posterior Margin ◽

Anterior Margin ◽

Effective Length ◽

Wing Base ◽

The Third ◽

Binocular Microscope ◽

Axillary Sclerites ◽

Median Plate ◽

Micrometer Eyepiece ◽

Wing Folding

The wing folding mechanism was investigated after a detailed study of the wing base morphology had been made (Sharplin, Canad. Ent. 95: 1024; 1121). Living moths were observed with a binocular microscope equipped with a micrometer eyepiece.The first and second axillary sclerites do not move anteroposteriorly; only the distal half of the wing base is involved in wing folding. The folding muscle originates on the pleural ridge and inserts on the third axillary sclerite. The movement of the third axillary is communicated to the bases of the anterior veins through the median plates. The radial plate rotates around the ventral second axillary sclerite which lies underneath the radial bridge at point p, (Fig. 1). Bending cuticle allows the radial bridge to buckle when the wing is folded. The first median plate ( Ml ) rotates about its articulation ( f ) with the dorsal second axillary sclerite. The distal median plate (M2) passes underneath the second cubitus and is fused to the radius. This connection to the radius restricts the backward movement of the second median plate so that point e instead of following the wider arc eg of a circle with its centre at f, must follow the arc cegd drawn about pivot p. The median plates are bent upwards during wing folding and their effective length is shortened so that they can follow the shallow arc epg. When point e is in position g the posterior margin of the median plates is straight, although the anterior margin remains arched causing the median plates to be buckled, (Fig. 2).

An Automatic Recorder for Measuring the Strength of Radio Signals and Atmospheric Disturbances

Proceedings of the IRE ◽

10.1109/jrproc.1928.221449 ◽

1928 ◽

Vol 16 (5) ◽

pp. 666-670 ◽

Cited By ~ 1

Author(s):

E.B. Judson

Keyword(s):

Automatic Recorder ◽

Atmospheric Disturbances ◽

Radio Signals

micrometer eyepiece

Dictionary of Gems and Gemology ◽

10.1007/978-3-540-72816-0_14354 ◽

2009 ◽

pp. 570-570

Keyword(s):

Micrometer Eyepiece

An automatic recorder for measuring size-frequency distribution of grains

Journal of the Franklin Institute ◽

10.1016/s0016-0032(25)90726-0 ◽

1925 ◽

Vol 200 (5) ◽

pp. 674-675

Author(s):

R.H. Lambert ◽

E.P. Wightman

Keyword(s):

Frequency Distribution ◽

Size Frequency Distribution ◽

Automatic Recorder ◽

Size Frequency

Self‐contained automatic recorder of the dc Josephson current

Review of Scientific Instruments ◽

10.1063/1.1135326 ◽

1978 ◽

Vol 49 (12) ◽

pp. 1732-1734 ◽

Cited By ~ 4

Author(s):

R. W. Simon ◽

P. Landmeier

Keyword(s):

Josephson Current ◽

Automatic Recorder

Measuring Microscope for Rubber Specimens

Rubber Chemistry and Technology ◽

10.5254/1.3547532 ◽

1933 ◽

Vol 6 (1) ◽

pp. 151-155

Author(s):

R. E. Lofton

Keyword(s):

Tensile Test ◽

Low Power ◽

Focal Length ◽

Type A ◽

Cross Sectional ◽

Test Strips ◽

Mechanical Measurements ◽

Measuring Microscope ◽

The Cross ◽

Micrometer Eyepiece

Abstract A microscope provided with a six-times micrometer eyepiece and objectives of 32 and 48 mm. focal length is suitable for measuring the cross-sectional dimensions of rubber test specimens. The width of specimens is usually greater than that of the die with which they were cut. The thickness of soft compounds as determined by the microscope is greater than that indicated by a gage of the plunger type. A MICROSCOPE of low power, equipped with a micrometer eyepiece, affords a convenient and practical means for accurately measuring the dimensions of rubber test specimens, and at the same time permits the inspection of specimens for defects. The equipment here described was designed particularly for measuring the width of the familiar dumb-bell shaped tensile test strips. At the present time no convenient and accurate gage is available for this purpose, and it is common practice to assume that the width of the specimen is the same as the die with which it was cut. The same equipment has been found satisfactory for determining the thickness of test strips, and is generally applicable for the measurement of dimensions up to about 6.4 mm. (0.25 inch). This use of the microscope embodies no original features. The method and equipment, however, are here described in some detail, since they may be of interest to investigators who may have occasion to make accurate mechanical measurements on rubber.

A digitised micrometer eyepiece for measurements in nuclear emulsions

Nuclear Instruments and Methods ◽

10.1016/0029-554x(64)90251-4 ◽

1964 ◽

Vol 30 (1) ◽

pp. 93-98 ◽

Cited By ~ 1

Author(s):

D.A. Evans ◽

F. Foster

Keyword(s):

Nuclear Emulsions ◽

Micrometer Eyepiece

The calibration of a micrometer eyepiece for the determination of 2 E

Microchimica Acta ◽

10.1007/bf01425018 ◽

1952 ◽

Vol 39 (2) ◽

pp. 192-193

Author(s):

Albert J. Pollard ◽

L. I. Braddock ◽

Mary L. Willard

Keyword(s):

Micrometer Eyepiece

A Mechanism for Reducing Vibration in the Use of the Filar Micrometer Eyepiece

Transactions of the American Microscopical Society ◽

10.2307/3222432 ◽

1932 ◽

Vol 51 (2) ◽

pp. 157

Author(s):

M. A. Raines

Keyword(s):

Micrometer Eyepiece