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1 result for "OPA" in Creator.

Found in catalogs (50+)

• Educational Screen 1948-1949 — page 13

  an opaque projector comes ni An opaque projector is the primary projector for classroom use. No other type of projector can serve the same…

• Educational Screen 1951,1952,1953 — page 480

  NEW Beseler TEACHING AID Mailed FREE to you on request OPAQUE PROJECTION PRACTICES is a free service bulletin; a literary clearing-house of visual…

• Educational Screen 1951,1952,1953 — page 656

  i NEW Beseler TEACHING AID Mailed FREE to you on request OPAQUE PROJECTION PRACTICES is a free service bulletin; a literary clearing-house of…

• Educational Screen 1950 — page 207

  Picto-Aids fascinate children This outstanding new teaching material is prepared by experts for use with ALL Opaque Projectors The first in a series…

• Educational Screen 1951,1952,1953 — page 615

  NEW Beseler ■mm TEACHING AID Mailed FREE to you on request OPAQUE PROJECTION PRACTICES is a free service bulletin; a literary clearing-house of…

• Educational Screen 1948-1949 — page 367

  …MODEL O A liglitweight, inexpensive opaque projector specially de- signed for projection to small groups. MODEL OA2 A combination opaque and slide projector that…

• Educational Screen 1951,1952,1953 — page 568

  i NEW Beseler TEACHING AID Mailed FREE ^ to you on request OPAQUE PROJECTION PRACTICES is a free service bulletin; a literary clearing-house of…

• Educational Screen 1951,1952,1953 — page 580

  …The Miss Jones in this school was really teaching with the opaque projector. Effective use of the opaque projector, as briefly de- scribed in…

• Educational Screen 1946-1947 — page 975

  …for brilliant pictures from opaque objects and slides PRINTED illustrations, text, photographs, drawings, and many other opaque ob- jects, including geological and botanical specimens…

• Educational Screen 1946-1947 — page 1001

  …for brilliant pictures from opaque objects and slides PRINTED illustrations, text, photographs, drawings, and many other opaque ob- jects, including geological and botanical specimens…

• Educational Screen 1940 — page 381

  November, 1940 Page 365 B&L BALOPTICONS LR AND ERM n£4AJ^ B&L Balopticons ERM for opaque objects only and LRM for both…

• Educational Screen 1940 — page 194

  Page 182 The Educational Screen B&L BALOPTICONS LRM A^D ER arith vhedjQ n£4^ B&L Balopticons ERM for opaque objects only…

• Educational Screen 1948-1949 — page 309

  FOR MAKING US WHAT WE ARE TODAY We sincerely believe that your recognition and response to opaque projectors as the primary projectors in visual…

• Educational Screen 1954,1955,1956 — page 705

  …The instructional tasks and die opaque projections constructed in- cluded: Set I: Opaque projection of exam- ples of the various stimuli used by teachers…

• Educational Screen 1935 — page 186

  …THE projection of three kinds of material is very important in the field of visual education ; namely, lantern slides, opaque material and microscopic material…

• Educational Screen 1932 — page 14

  Page 8 The Educational Screen (D) How does "daylight" projection, through trans- lucent screen, differ from projection on opaque screen? For so-called daylight…

• Educational Screen 1948-1949 — page 424

  …Never has an opaque projector been so amazingly successful as the Beseiei Model OA3. This outstanding opaque projector has met with an enthusiastic reception…

• Educational Screen 1946-1947 — page 750

  …Opaque Materials for Motivation We used opaque materials to help motivate a group of boys and girls in the weekday school to buy a…

• Educational Screen 1954,1955,1956 — page 191

  …Then compare it by demonstration with any other 1000 -watt opaque model. The results will be dramatic. An exclusive AO coated lens on the…

• Educational Screen 1954,1955,1956 — page 97

  …New projector gives brighter, crisper pictures ...corner-to-corner sharpness "SCREEN TEST" shows efficiency of "Opaque 1000." To "see for yourself," ask for an…

• Educational Screen 1951,1952,1953 — page 1112

  mat's all this lYTE OPAQUE PROJECTION? 1 f It's the topic of the day, in educational circles at every teaching level. The…

• Educational Screen 1930-1931 — page 430

  …But if the method of opaque projection is used, the difficulty is removed. With opaque projection almost any kind of picture can be shown…

• Educational Screen 1940 — page 98

  …BALOPTICON LRM Slides and Opaque Material Balopticon LRM is a combined slide and opaque projector with balanced illumination to avoid eye- strain. No great…

• Educational Screen 1940 — page 93

  …BALOPTICON LRM Slides and Opaque Material Balopticon LRM is a combined slide and opaque projector with balanced illumination to avoid eye- strain. No great…

• Educational Screen 1944-45 — page 833

  November, 1945 Page 381 BESELER MODEL 0A2 Transparent and Opaque Pro/ecfor The BESELER Model 0A2 leads the field—in advanced design . . . engineering features…

• Educational Screen 1935 — page 297

  …B & L Model KOSB Balopticon for projection of opaque objects or lan- tern slides with res:ular or translucent screen. CS B & L Balopticon…

• Educational Screen 1944-45 — page 786

  …Takes Standard Slides and Opaque Material up to 6I4" X 6y^". Instantly changeable from OPAQUE to TRANSPARENT simply by mov- ing a lever. Special…

• Educational Screen 1933 — page 31

  …Projects standard glass slides and opaque material up to six inches square. The holder for opaque objects has been especially designed to carry such…

• Educational Screen 1946-1947 — page 703

  …We are prepared to have this fine opaque projector demonstrated anywhere in the United States in your own office, classroom or church. The Beseler…

• Educational Screen 1932 — page 51

  …The mirrors in opaque projectors must be protected very carefully. (E) How arc "daylight" projectors used? When projectors are used back of translucent screens…

• Educational Screen 1948-1949 — page 163

  …Will project opaque material in silhouette. • Takes copy up to 7" x 7". • Delivers a sharp image over entire area. • Projection can be clearly…

• Educational Screen 1944-45 — page 755

  September, 1945 Page 303 PERFECTION ^ PROJECTION! BESELER MODEL 0A2 TRANSPARENT and OPAQUE PROJECTOR specially designed for the various needs of the classroom From this…

• Educational Screen 1924-1925 — page 849

  …The screen shown is THE TRANS-LUX AIR-COOLED OPAQUE PROJECTOR PUTS ANY PICTURE On The Trans-Lux Daylight Screen You Need it in…

• Educational Screen 1950 — page 107

  …Horizontally and Vertically BESELER MODEL OAG4 is the one opaque projector you can buy that will project a full page — not only vertically, but…

• Educational Screen 1951,1952,1953 — page 396

  …In addition, VU-LYTE is an amazingly quiel and cool-operating opaque projector. *Pat. Pending J^ tPatented ,/ » »~ .♦ IHt NEW VU-LYTE OPAQUE PROJECTOR These…

• Educational Screen 1944-45 — page 670

  Page 218 Educational Screen For every classroom in your school! Model OA' New BESELER Opaque Projector Weighs only 1 1 lbs. $29 Special School…

• Educational Screen 1937 — page 237

  …for lan- tern slides or opaque objects or pictures . . . for projecting on opaque or translucent screens . . . for large auditoriums or small classrooms. Write for…

• Educational Screen 1924-1925 — page 298

  …New Opaque Projector MUCH attention has been attracted during the past few months by the opaque pro- jector introduced by the Trans-Lux Daylight…

• Educational Screen 1935 — page 139

  …Opaque Projection Pictures, charts, maps, etc., or even objects which are always at hand can be used in the LRM for opaque projection. Send…

• Educational Screen 1948-1949 — page 108

  …Balanced illumination permits switching from opaque to slide projection without a distracting change in screen brilliance. Slides and opaque materials are protected from heat…

• Educational Screen 1948-1949 — page 61

  …Balanced illumination permits switching from opaque to slide projection without a distracting change in screen brilliance. , Slides and opaque materials are protected from heat…

• Educational Screen 1951,1952,1953 — page 132

  …In addition, VU-LYTE is an amazingly quiet and cool-operating opaque projector. THE NEW OPAQUE PROJECTOR -«.«*.* These advanced, exclusive features, plus others, are…

• Educational Screen 1951,1952,1953 — page 216

  VACUMATIC PLATEN* POINTEX* PROJECTION POINTER Beseler's revolutionary FEED-O-MATIC* feature on the new VU-LYTE Opaque Projector permits continuous, smooth projection of…

• Educational Screen 1926-1927 — page 315

  May, 1926 Advertisement 311 Model CRM $100.00 Combined Balopticons For Projecting Both Slides and Opaque Objects THESE two lanterns rep- resent the type…

• Educational Screen 1951,1952,1953 — page 658

  …And we apologize for the occasional opaqueness of our proof- reading department. The "opaque" glass referred to in Hobert Bums' article is actually "opal…

• Educational Screen 1946-1947 — page 142

  Page 166 Educational Screen PERFECTION O^ PROJECTION! BESELER MODEL 0A2 TRANSPARENT and OPAQUE PROJECTOR specially designed for the various needs of the classroom S…

• Educational Screen 1926-1927 — page 798

  …Opaque Object Projection Opaque Projectors are excellent aids in pre- senting an extremely wide range of class work. The material that can be projected…

• Educational Screen 1950 — page 308

  CHARLES GeseZee COMPANY World's largest manufacturer of opaque projection equipment Now is ready to introduce the finest opaque projector ever made ...Not a…

• Educational Screen 1935 — page 111

  …There is no Substitute for the Superiority of the Spencer Delineascope Optical System ^^NE of the definite advantages of opaque pro- iection is that…

• Educational Screen 1937 — page 265

  …UNIT TEACHING Simplified by Opaque Projection • Material accumulated by students and instructors, in developing a unit of study, may include small objects, photographs, illustrations…