Tolles large compound microscope
Datecirca 1862
Inventory Number1128
ClassificationMicroscope
Subject
Maker
R. B. Tolles and C. E. Grunow
1859 - 1867
Cultural Region
Place of Origin
Dimensionsmicroscope: 46 × 24 × 18.8 cm (18 1/8 × 9 7/16 × 7 3/8 in.)
acc. box: 2 × 11 × 6.2 cm (13/16 × 4 5/16 × 2 7/16 in.)
acc. box: 2 × 11 × 6.2 cm (13/16 × 4 5/16 × 2 7/16 in.)
Material
AccessoriesTolles objective marked 4" on case but scratched 1 1/2 on barrel, dated 5/20/1873; Tolles solid ocular 34 mm diameter.
DescriptionLarge diameter and long optical assembly tube. Coarse focus is by rack and pinion. Coarse focus motion of the tube is guided by line contact only of V guides tothe tube. The fine focus is by a lever from the side about two inches up. Arm seems to be a casting (possibly bronze) that is painted black. Rest of stand is brass. The removable stage has no motion.
The instrument has an unusual very long, low-power objective with an extendable rear element. Perhaps it has a variable focal length or zoom function. The objective is marked 4" on the case but scratched 1 1/2 on the barrel. It is dated May 20, 1873. The front element is partly decemented.
The eyepiece is a Tolles solid ocular of 34 mm diameter.
The instrument has an unusual very long, low-power objective with an extendable rear element. Perhaps it has a variable focal length or zoom function. The objective is marked 4" on the case but scratched 1 1/2 on the barrel. It is dated May 20, 1873. The front element is partly decemented.
The eyepiece is a Tolles solid ocular of 34 mm diameter.
Signedon tube: R. B. Tolles. / C. E. Grunow. / Canastota. / N. Y.
Curatorial RemarksDavid P. Wheatland noted that the Tolles 1/50th inch focus, very high power objective was associated with this microscope. It has inventory number 1045L.
ProvenanceHarvard University Museum of Comparative Zoology via Thomas Barbour; gift to Ernst-Lewis Collection of Microscopes (inv. no. 128), Harvard Medical School.
R. B. Tolles and C. E. Grunow
Date: circa 1860
Accessories: No objective; 1 medium power solid Tolles ocular of 34 mm dia., marked: "Pat'd. Sept. 25 1855." ; no condenser or diaphragm; single small concave substage mirror.
Object number: 1137
Robert B. Tolles
Date: circa 1875
Accessories: 2 Tolles objectives: 1/8" dated 6/27/1866; 1/8" 120 deg. dated 3/7/1869, can marked: Immersion, also scratched: C. X. D. 1902; empty can for Tolles 1/4", now on inverted Tolles Nr. 1203; 2 oculars, no name, not solid, 24.5 mm dia.; Standing case.
Object number: 1127
Boston Optical Works
Date: circa 1870
Accessories: 3 Tolles objectives: 1 with 3 fronts; empty can 8/10; 5 Tolles oculars 34 mm dia.: 2 all solid, 2 solid field l. & single eye lens, 1 std.; centerable condenser with diaphragm wheel; mech. stage; side illuminator prism; cabinet.
Object number: 1016a
Robert B. Tolles
Date: after 1877
Accessories: 3 Tolles objectives: 1/4 with collar, no date; 1/2 "TOLLES, BOSTON, dated 1877, cap instead of can; 2" (unusual) in can; 2 anonymous 24.5mm dia. oculars; single substage mirror; stage clips; double mirror on stand; standing case with key.
Object number: 1131
Boston Optical Works
Date: circa 1870
Accessories: 3 Tolles objectives: 1 with 3 fronts; empty can 8/10; 5 Tolles oculars 34 mm dia.: 2 all solid, 2 solid field l. & single eye lens, 1 std.; blue filter; case; key. Also see 1016a: microscope with centerable condenser with diaphragm wheel; and mechanical stage. 1016c: side illumination prism. 1016d, e, f: specialized Tolles objectives.
Object number: 1016b
Robert B. Tolles
Date: circa 1874
Accessories: 3 Objectives: Tolles (?) with front element missing, no date; Leitz 1/12 oel imm., tubus 160 mm; Tolles 1/6" 35 deg., no date; 4 Tolles oculars 24.5 mm dia.; condensor w. iris; diaphragm wheel; substage mirror w. opt. stand; Nichol's micr.; case. camera luc Abbe condensor; diaphragm wheel; separate stand f. substage mirror; standing case.
Object number: 1305
Robert B. Tolles
Date: circa 1880
Accessories: Tolles ocular, 24.5 mm dia.; Tolles 1/4" objective; no condensor; diaphragm wheel; concave/flat substage mirror; standing walnut case.
Object number: 1294
Boston Optical Works
Date: circa 1870
Accessories: 3 Tolles oculars 24.5 mm dia. : high power solid, med and low Huyghens; 2 Tolles objectives: 1/6 immersion dated 11/3/1878 and 1"(by can), no date, no collar; polarizer, no analyzer; substage double mirror; diaphragm wheel; no condenser; case.
Object number: 1130
Boston Optical Works
Date: 1860-1890
Accessories: Three dated Tolles objectives: 1/2" Nov. 18, 1860, 1/4" Dec. 23, 1877, 1/5" Oct. 28, 1868; 1 high power solid eyepiece, 1 low power normal eyepiece; polarizer; substage mirror; mechanical stage, standing case.
Object number: 1066
Boston Optical Works
Date: circa 1880
Accessories: One unmarked demonstration slide; 1 objective, probably not by Tolles; 1 Society thread extender 14mm; 1 ocular, Huyghens?, 24.7 mm barrel, (45 deg. knurl suggests Tolles, although optics and eye end do not).
Object number: 1033
Robert B. Tolles
Date: circa 1865
Accessories: 3 Tolles objectives with correction collars in canisters: 1/12 inch undated; 1/5 inch dated 1/2/1872; 4/10 inch dated 4/30/1863; 3 eyepieces : low , 35.4 mm O.D.; med., 35.4 mm O.D., solid front and single eyelens dated 5/7/1863; high, 34.1 mm O.D., all solid; brass ring to replace stage.
Object number: 1008
Robert B. Tolles
Date: circa 1870
Accessories: One objective: Tolles 1/10 immersion, 180 air angle, dated 8/20/1874, with canister (7 others are now in 1214a); 2 pairs of oculars; magnifier on base marked: J. R. W. /P...?, ME, ; polarizer; drawing prism; diaphragm disc; case.
Object number: 1214
See also/See also
