Tasco 1575 - Manual (Page 59)

Instruments
STUDENT SPECTROMETER
Unused and a real beauty. Heavy duty high quality
rugged metal construction throughout. Consists of a
telescope with eyepiece and 21mm clear diameter
achromatic focusing objective lens, and a collimator
with removable adjustable slit and achromatic focusing
21mm clear diameter objective. The 7-1/2"diameter
graduated circle has lines for each degree and is
numbered at every 10 degrees. Telescope and collimator are each 8"
long. Center table is designed to hold either a prism or grating. Vernier
control and scale for precision measurement. Telescope and table rotate
about a vertical axis. Spectrometers are used to measure and/or observe
spectrum, absorption bands, angles of refraction and reflection, etc.
The slit and collimator produce a parallel beam of light which then falls
on your prism or grating. The resulting spectrum is then observed through
the telescope.
I1430D $125.00
HIGH PRECISION 5MM RIGHT ANGLE PRISM
Manufacturer’s part # 01 PRB 003, original price:
$91.00. Made of BK7 glass, hypotenuse is 6.8mm long,
uncoated. The faces are 5mm square. Surface
flatness is 1/8th wave at 632.8 nm over 90% of edge
dimension. Clear aperture is 4.5mm, angle tolerance
is +/- 3 arc minutes. Surface quality is 20-10 scratch
and dig. Unused.
PM1050 $8.25
PREC 50MM SQUARE FUSED SILICA 1/20TH WAVE
FLAT/MIRROR
Manufacturer's part#02 MLQ 007,
original unit price: $290.00. 10mm thick,
wavelength is 400-800nm. Clear aperture
of 45mm, surface quality is 60-40
scratch and dig, parallelism is 3 arc
minutes. Non-aluminized. Polished on the top to 1/20th
wave and ground (but not polished) on the bottom.
PM1055 $37.50
Instruments - Page 57 Surplus Shed – www.SurplusShed.com