Queen's University Department of Biochemistry Collection
Category
Basic Science Artifacts
Classification
Basic Science, Laboratory Instrumentation
Accession Number
997039002 a-t
Description
Binocular microscope with attachments in a carrying case; this includes: (a) a heavy horseshoe base type microscope with a round light-reflecting mirror at the bottom; the slide base above this is square in shape and has two round knobs on the right side that move the base from side to side or up a…
Binocular microscope with attachments in a carrying case; this includes: (a) a heavy horseshoe base type microscope with a round light-reflecting mirror at the bottom; the slide base above this is square in shape and has two round knobs on the right side that move the base from side to side or up and down; the microscope has a heavy curved back, made for easy grasping, with two round adjustment knobs on each side; above the microscope slide base is a round revolving disk with four different cylindrical objectives; the topmost part of the microscope has two hollow cylindrical pieces into which fit eyepieces, (b,c); both eyepieces are made of a short piece of hollow cylindrical metal with glass set into the top and bottom; the left side of the inside of the carrying case has small wooden attachments set into it; the top left corner has an objective holder; this is rectangular in shape, with a closed bottom, front and back and open sides; the top has 6 open round holes that fit objective cases; there are three objective cases; each is made of hollow cylindrical metal with closed sides and bottom and a threaded top; onto each top fits a round cap that has threading on the insides; these include a case for a 3 objective (e) and lid (f), a case for a 4 objective (g) and lid (h), and a case for a 6a objective (i) and lid (j); on the left side of the case, below the objective holder, is a wooden eyepiece holder (k); this also is rectangular in shape, with a closed bottom, front and back and open sides; the top has 6 open round holes that fit eyepieces; there are two eyepieces (l,m); both are made of a short piece of hollow cylindrical metal with glass set into the top and bottom; on the left of the case, below the eyepiece holder, is a small storage box (n), with a sliding lid (o); the box is made of rectangular-shaped wood, with a closed bottom and four sides, and an open top which has a slot carved in, just near the upper edges; the lid is also of rectangular-shaped wood and fits into the slots of the box, which contains a round, flat piece of glass and a cylindrical piece of metal with horizontal grooves cut into it and a smaller cylindrical piece at one end; the function of these two pieces is unknown, so neither were given numbers; the upper side of the case has two attached brown velvet-lined wooden pieces that are flat on the outer sides and rounded and dark-brown velvet-lined on the inside; these were designed to hold an attachment which is now missing; the centre of the left side of the case has a metal bracket attached which holds a lens attachment (p); this attachment is made of cylindrical hollow metal, open at both ends, with one end being made of brass and tapered; the microscope comes with a printed paper instruction sheet (q) on the use of oil immersion lenses; this consists of a piece of printed paper, folded in half, then folded in half again; there is also a magnification table (r), which is printed on heavy paper and attached on the inside of the case door; the outside of the front door on the carrying case has a metal lock and key (s); the key is made of flat metal, with a heart-shaped opening at the handle and a notched working end; the carrying case (t) is rectangular in shape, with finger joints at the top and bottom side edges; the top, bottom, sides and back are closed; the front has a door hinged on the right side with two metal hinges and a metal lock and key at the left side; the top of the case has an attached metal handle which is semicircular with rounded
knobs where it attaches to the top of the case.
Number Of Parts
20
Part Names
a - microscope - Size: Length 33.4 cm. x Width 15.0 cm. x Depth 19.0 cm.
b - eyepiece (10xB) - Size: Length 3.5 cm. x Diameter2.6 cm.
c - eyepiece (10xB) - Size: Length 3.5 cm. x Diameter2.6 cm.
d - objective holder - Size: Length 21.2 cm. x Width 3.2 cm. x Depth 4.7 cm.
e - objective case - Size: Length 4.5 cm. x Diameter2.4 cm.
f - lid - Size: Length 1.4 cm. x Diameter2.7 cm.
g - objective case - Size: Length 4.5 cm. x Diameter2.4 cm.
h - lid - Size: Length 1.3 cm. x Diameter2.6 cm.
i - objective case - Size: Length 4.5 cm. x Diameter2.5 cm.
j - lid - Size: Length 1.4 cm. x Diameter2.7 cm.
k - eyepiece holder - Size: Length 21.2 cm. x Width 3.1 cm. x Depth 6.9 cm.
l - eyepiece - Size: Length 5.1 cm. x Diameter2.7 cm.
m - eyepiece - Size: Length 5.1 cm. x Diameter2.7 cm.
n - box - Size: Length 15.9 cm. x Width 4.7 cm. x Depth 3.0 cm.
o - box lid - Size: Length 15.4 cm. x Width 3.6 cm. x Depth 0.7 cm.
p - lens attachment - Size: Length 12.2 cm. x Width 4.3 cm. x Depth 5.1 cm.
q - instruction sheet (unfolded) - Size: Length 20.7 cm. x Width 11.9 cm.
r - magnification table - Size: Length 10.0 cm. x Width 8.4 cm.
s - key - Size: Length 4.8 cm. x Width 2.3 cm. x Depth 0.2 cm.
t - carrying case - Size: Length 41.2 cm. x Width 25.8 cm. x Depth 25.4 cm.
Provenance
The microscope is attributed to Dr. James Collip; it was then owned by a graduate student of his named Orville Denstedt; the microscope was given to Dr. Spencer in the mid-1960's, when Dr. Denstedt was a full professor of biochemistry at McGill University.
The instruction sheet (q) is dated 1930; Dr. Spencer dated the microscope as pre-W.W.II
Material
fabric: brown
metal: silver; brown
wood: brown
glass: clear
Inscriptions
(a) The front of the microscope has the words, "Ernst Leitz // Wetzlar" stamped into it; the objectives are labelled, "6a // E. LEITZ // WETZLAR // 42X"; "4 // E. LEITZ // WETZLAR // 20X"; "3 // Ernst Leitz Wetzlar // Germany // Apert. // 1.30 // 00x"; the back of the base has the words, "E. LEITZ // WETZLAR" and a scale stamped into it; (b,c) both eyepieces have the words, "Ernst Leitz Wetzlar // Periplan. Ok. 10 X B" stamped into the top; (e) the bottom of the objective holder is stamped with the word, "Germany"; (f) the top of the lid has the words, "3 // E. LEITZ // WETZLAR" stamped into it; (h) the top of the lid has the words, "4 // E. LEITZ // WETZLAR" stamped into it; (j) the top of the lid has the words, "6a // E. LEITZ // WETZLAR" stamped into it; (l,m) both eyepieces have the words, "Ernst Leitz Wetzlar // Periplan. Ok. 6xB" stamped into the top; (p) the lens attachment has the words, "Ernst Leitz // Wetzlar" stamped into the side; (q) the instruction sheet is headed with the words, "Ernst Leizt, Wetzlar // Hints on // the use of Oil Immersion Lenses"; printed information and pictures follow; (r) the magnification table reads, "Leitz Microscope No. 301944 // MAGNIFICATION TABLE // Table-length 170 mm. Distance at image 250 mm. // (When using the Microscope with a nosepiece the draw-tube should // be set at the mark 170 mm.) // Objectives // 3F // ^a // 1/12a // Periplan Eyepieces // 6x 10x // 66 110 // 250 420 // 570 950 // E. LEITZ
G.m.b.H., Optical Works, WETZLAR // Agencies: London, New-York, Tokyo, Peking // B 2599"
Permanent Location
Storage Room 0007
0007-A2-1
Condition Remarks
The microscope and its attachments show only minimal wear and no corrosion; the carrying case shows some wear, but is sturdy and complete
Copy Type
Original
Reference Types
Person
Book
Reference Comments
Dr. John Spencer; "Catalog of Laboratory Apparatus and Scientific Instruments CENCO JC-141," by the Central Scientific Company Limited, 1942, p. 728 (see attached photocopy)