Difference between revisions of "ISI Super IIIA"
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The third Super-Mini-SEM, ISI marketing shortened it to simply Super IIIA. However, the schematics still refer to it as the SMS-IIIA. | The third Super-Mini-SEM, ISI marketing shortened it to simply Super IIIA. However, the schematics still refer to it as the SMS-IIIA. | ||
| − | See [[ | + | See [[isi_sms|SMS]] family page for schematics |
JM has one | JM has one | ||
| Line 12: | Line 12: | ||
= Filament = | = Filament = | ||
| − | Good overview of SEM filament types: | + | Good overview of SEM filament types: [http://www.reu.pdx.edu/SEM Short Course.pdf http://www.reu.pdx.edu/SEM Short Course.pdf] |
Trying to find replacement filaments. Takes the ISI three prong type | Trying to find replacement filaments. Takes the ISI three prong type | ||
| Line 19: | Line 19: | ||
{| class="wikitable sortable" border=1 | {| class="wikitable sortable" border=1 | ||
| − | !Vendor !!Item # !!Description !!Price/pack !!Qty/pack !!Qty/each !!Notes | + | !Vendor !!Item # !!Description !!Price/pack !!Qty/pack !!Qty/each !!Notes |
|- | |- | ||
| − | | Ted Pella || | + | | Ted Pella || [https://www.tedpella.com/apertures-and-filaments_html/tungsten-filaments.htm 1426] || ISI / ABT / Topcon 3-pin || 425.00 || 10 || 42.50 || |
|- | |- | ||
| − | | Electron Microscopy Sciences || | + | | Electron Microscopy Sciences || [http://www.emsdiasum.com/microscopy/products/microscope/filament.aspx 81038] || <br />STANDARD LOOP FILAMENTS for: ISI Instruments, ABT, Topcon <br /> <br />New Filament, 3-prong || 416.00 || 10 || 41.60 || |
|- | |- | ||
| − | | Electron Microscopy Sciences || | + | | Electron Microscopy Sciences || [http://www.emsdiasum.com/microscopy/products/microscope/filament.aspx 81038-R] || <br />STANDARD LOOP FILAMENTS for: ISI Instruments, ABT, Topcon <br /> <br />Rebuilt Filament, 3-prong || || 1 || 32.00 || |
|- | |- | ||
| − | | SPI Supplies || | + | | SPI Supplies || [http://www.2spi.com/catalog/filaments/fil1.shtml 5232N-BA] || Topcon/ISI 3-pin || 525.49 || 10 || 52.55 || |
|- | |- | ||
| − | | SPI Supplies || | + | | SPI Supplies || [http://www.2spi.com/catalog/filaments/fil1.shtml 5232RB-AB] || Topcon/ISI 3-pin (rebuilt) || || 1 || 41.57 || |
|- | |- | ||
| − | | EB Sciences || | + | | EB Sciences || [http://www.ebsstore.com/product.aspx?pid=354 ISIE] || Standard loop, 3 Prong || 405.00 || 10 || 40.50 || |
|- | |- | ||
| − | | EB Sciences || | + | | EB Sciences || [http://www.ebsstore.com/product.aspx?pid=354 ISIE] || AR loop, 3 Prong || 455.00 || 10 || 45.50 || |
|- | |- | ||
| − | | Fisher Scientific || | + | | Fisher Scientific || [http://www.fishersci.com/ecomm/servlet/itemdetail?itemdetail='item'&storeId=10652&productId=14218960&catalogId=29104&matchedCatNo=5029087&fromSearch=1&searchKey=3-prong&highlightProductsItemsFlag=Y&endecaSearchQuery=#store=Scientific#nav=0#rpp=25#offSet=25#keyWord=3-prong#searchType=PROD#SWKeyList=[]&xrefPartType=From&savings=0.0&xrefEvent=1398144201666_2&searchType=PROD&hasPromo=0 50-290-87] || NEW FILAMENT 3-PRONG || 509.60 || 10 || 50.96 || |
|- | |- | ||
| − | | Soquelec || | + | | Soquelec || [http://www.soquelec.ca/filaments4-5.asp A20135] || ISI (2-prong, new) || || 1 || 68.10 || NOTE: 2 prong for comparison |
|- | |- | ||
| − | | Soquelec || | + | | Soquelec || [http://www.soquelec.ca/filaments4-5.asp A20140] || ISI (2-prong, rebuilt) || || 1 || 39.00 || NOTE: 2 prong for comparison |
|- | |- | ||
| − | | ME Taylor || | + | | ME Taylor || [http://www.semicro.org/topconisi3-pinstylefilaments-packageof10.aspx F-3] || Topcon/ISI 3-pin style Filaments - Package of 10 || 275.00 || 10 || 27.50 || |
|- | |- | ||
|} | |} | ||
| Line 65: | Line 65: | ||
Wehnelt assembly: | Wehnelt assembly: | ||
| − | + | [[File:microscope_sem_isi_super_iii_a_gun_apart1.jpg|300 px]] | |
Base it plugs into: | Base it plugs into: | ||
| − | + | [[File:microscope_sem_isi_super_iii_a_gun_base.jpg|300 px]] | |
Taking off top retainer: | Taking off top retainer: | ||
| − | + | [[File:microscope_sem_isi_super_iii_a_gun_apart2.jpg|300 px]] | |
Removing the Wehnelt: | Removing the Wehnelt: | ||
| − | + | [[File:microscope_sem_isi_super_iii_a_gun_apart3.jpg|300 px]] | |
Note that the filament is slightly twisted to form the tip. Also, its burned out | Note that the filament is slightly twisted to form the tip. Also, its burned out | ||
| Line 83: | Line 83: | ||
Wehnelt bottom: | Wehnelt bottom: | ||
| − | + | [[File:microscope_sem_isi_super_iii_a_gun_topbot.jpg|300 px]] | |
Side of the filament assembly | Side of the filament assembly | ||
| − | + | [[File:microscope_sem_isi_super_iii_a_gun_side1.jpg|300 px]][[File:microscope_sem_isi_super_iii_a_gun_side2.jpg|300 px]] | |
Filament tip: | Filament tip: | ||
| − | + | [[File:microscope_sem_isi_super_iii_a_gun_tip.jpg|300 px]] | |
Everything together: | Everything together: | ||
| − | + | [[File:microscope_sem_isi_super_iii_a_gun_apart.jpg|600 px]] | |
= lapointe2 = | = lapointe2 = | ||
| − | + | [http://members.tm.net/lapointe2/scanning_electron_microscope.html http://members.tm.net/lapointe2/scanning_electron_microscope.html] | |
Great resource on this model. Unfortunately, links to pages are hidden throughout the text so I've tried to index it a bit better. I also have mirrored the site in case it disappears: | Great resource on this model. Unfortunately, links to pages are hidden throughout the text so I've tried to index it a bit better. I also have mirrored the site in case it disappears: | ||
| − | + | ** [http://members.tm.net/lapointe2/scanning_electron_microscope.html Home] | |
| − | + | ** [http://members.tm.net/lapointe2/Scanning_Electron_Microscope_Operation.html Operation] | |
| − | + | ** Like a user manual: read it | |
| − | + | ** [http://members.tm.net/lapointe2/Scanning_Electron_Microscope_Vacuum.html High vacuum system] | |
| − | + | ** [http://members.tm.net/lapointe2/Scanning_Electron_Microscope_HVPS.html High voltage power supply] | |
| − | + | ** [http://members.tm.net/lapointe2/Scanning_Electron_Microscope_Vibration.html Anti-vibration mounts] | |
| − | + | ** [http://members.tm.net/lapointe2/Scanning_Electron_Microscope_Cooler.html DP cooler] | |
| − | + | ** DIY chiller | |
| − | + | ** [http://members.tm.net/lapointe2/Scanning_Electron_Microscope_Filament.html Changing the filament] | |
| − | + | ** [http://members.tm.net/lapointe2/Scanning_Electron_Microscope_Scintillator.html Changing the scintillator] | |
These are less about the SEM and more about his particular logistics: | These are less about the SEM and more about his particular logistics: | ||
| − | + | ** [http://members.tm.net/lapointe/Vacuum_Pump.html Vacuum pump and gauge] | |
| − | + | ** Hooking up his roughing pump | |
| − | + | ** [http://members.tm.net/lapointe2/Scanning_Electron_Microscope_Plug_In.html Plug it in] | |
| − | + | ** Hooking up his electrical lines | |
== Cleaning == | == Cleaning == | ||
| Line 125: | Line 125: | ||
Wenol metal polish recommended for cleaning. MSDS lists | Wenol metal polish recommended for cleaning. MSDS lists | ||
| − | + | ** Ammonia Solution 25%: 1-5% | |
| − | + | ** Kerosene 200-230: 10-20% | |
| − | + | ** White Spirit 150/200N: 10-20% | |
| − | + | ** Aluminum oxide (pigments): 25-35% | |
| − | + | ** Coco fatty acid diethanolamide: 5-15% | |
| − | + | ** Water: 35% | |
| − | + | [https://www.tedpella.com/material_html/polish.htm#Anchor-47857 https://www.tedpella.com/material_html/polish.htm#Anchor-47857] | |
| − | + | ** "Wenol® is widely used as cleaner and polish for electron microscope applications, ion beam systems, vacuum coating systems and general lab applications. Wenol® has been originally formulated for use on hard metal surfaces such as stainless steel. It can be used to clean and polish hard metal parts for vacuum systems. The carrier fluid dissolves in most hydrocarbons and is easily removed. Wenol® is petroleum based and does not contain silicones. It is not recommended for use on soft metal such as aluminum." | |
Ted Pella also has Unipol…not sure when to use one vs the other. Generic Wenol? | Ted Pella also has Unipol…not sure when to use one vs the other. Generic Wenol? | ||
| − | + | ** Aluminium oxide: 20-40 | |
| − | + | ** Ammonia solution: 0.1-5 | |
| − | + | ** Destillates (petroleum), hydrotreated light: 20-40 | |
| − | + | ** Naphtha (petroleum), hydrotreated light: 2.5-10 | |
read somewhere 100ml ~= 3.4oz Wenol | read somewhere 100ml ~= 3.4oz Wenol | ||
| Line 155: | Line 155: | ||
== High vacuum assembly == | == High vacuum assembly == | ||
| − | + | [[File:microscope_sem_isi_super_iii_a_sem_vacuum_drawing.gif|300 px]] | |
Abbreviations: | Abbreviations: | ||
| − | + | ** ID: inner diameter | |
| − | + | ** OD: outer diameter | |
| − | + | ** CS: cross section | |
What is difference between nominal and actual size? | What is difference between nominal and actual size? | ||
{| class="wikitable sortable" border=1 | {| class="wikitable sortable" border=1 | ||
| − | !AS568A size !!ID !!OD !!CS !!Qty | + | !AS568A size !!ID !!OD !!CS !!Qty |
|- | |- | ||
| − | | 011 || 1 || || || | + | | 011 || 1 || || || |
|- | |- | ||
| − | | 013 || 1 || || || | + | | 013 || 1 || || || |
|- | |- | ||
| − | | 118 || 2 || || || | + | | 118 || 2 || || || |
|- | |- | ||
| − | | 128 || 1 || || || | + | | 128 || 1 || || || |
|- | |- | ||
| − | | 141 || 1 || || || | + | | 141 || 1 || || || |
|- | |- | ||
| − | | 214 || 1 || || || | + | | 214 || 1 || || || |
|- | |- | ||
| − | | 215 || 2 || || || | + | | 215 || 2 || || || |
|- | |- | ||
| − | | 216 || 1 || || || | + | | 216 || 1 || || || |
|- | |- | ||
| − | | 220 || 2 || || || | + | | 220 || 2 || || || |
|- | |- | ||
| − | | 221 || 1 || || || | + | | 221 || 1 || || || |
|- | |- | ||
| − | | 222 || 2 || || || | + | | 222 || 2 || || || |
|- | |- | ||
| − | | 226 || 1 || || || | + | | 226 || 1 || || || |
|- | |- | ||
| − | | 233 || 1 || || || | + | | 233 || 1 || || || |
|- | |- | ||
|} | |} | ||
| Line 198: | Line 198: | ||
== Valve assembly == | == Valve assembly == | ||
| − | + | [[File:microscope_sem_isi_super_iii_a_sem_asbvalve_drawing.gif|300 px]] | |
{| class="wikitable sortable" border=1 | {| class="wikitable sortable" border=1 | ||
| − | !AS568A size !!Qty | + | !AS568A size !!Qty |
|- | |- | ||
| − | | 006 || 1 | + | | 006 || 1 |
|- | |- | ||
| − | | 121 || 2 | + | | 121 || 2 |
|- | |- | ||
| − | | 123 || 1 | + | | 123 || 1 |
|- | |- | ||
|} | |} | ||
| Line 235: | Line 235: | ||
== govdeals == | == govdeals == | ||
| − | All images in this section are from | + | All images in this section are from [http://www.govdeals.com/index.cfm?fa=Main.Item&itemid=8058&acctid=685 GovDeals] |
"You will be bidding on a International Scientific Instruments Model Super III A Scanning Electron Microscope. The unit was purchased in 1979 and converted to digital and updated in 1999. This unit comes with a Robinson Backscatter detector, Gresham Titan X-ray pulse-processor, 4PI digital imaging attachment, control computer and software. The agency is reporting the unit is operational except for the X-ray detector analyzer and the software is up to date (uses Macintosh OS9). There are miscellaneous spare parts, filament assemblies, a manual, schematics and a TMC anti-vibration platform is included…located on the Winthrop University Campus in Rock Hill, South Carolina." | "You will be bidding on a International Scientific Instruments Model Super III A Scanning Electron Microscope. The unit was purchased in 1979 and converted to digital and updated in 1999. This unit comes with a Robinson Backscatter detector, Gresham Titan X-ray pulse-processor, 4PI digital imaging attachment, control computer and software. The agency is reporting the unit is operational except for the X-ray detector analyzer and the software is up to date (uses Macintosh OS9). There are miscellaneous spare parts, filament assemblies, a manual, schematics and a TMC anti-vibration platform is included…located on the Winthrop University Campus in Rock Hill, South Carolina." | ||
| Line 241: | Line 241: | ||
This is by far the most pimped out unit I've found so far: | This is by far the most pimped out unit I've found so far: | ||
| − | + | ** Computer image capture | |
| − | + | ** Maybe computer control? | |
| − | + | ** Robinson Backscatter detector (is that the special PMT assembly?) | |
| − | + | ** Gresham Titan X-ray pulse-processor (for the EDS?) | |
| − | + | [[File:microscope_sem_isi_super_iii_a_govdeals_685_8058_10.jpg|300 px]][[File:microscope_sem_isi_super_iii_a_govdeals_685_8058_2.jpg|300 px]][[File:microscope_sem_isi_super_iii_a_govdeals_685_8058_3.jpg|300 px]][[File:microscope_sem_isi_super_iii_a_govdeals_685_8058_4.jpg|300 px]][[File:microscope_sem_isi_super_iii_a_govdeals_685_8058_5.jpg|300 px]][[File:microscope_sem_isi_super_iii_a_govdeals_685_8058_7.jpg|300 px]][[File:microscope_sem_isi_super_iii_a_govdeals_685_8058_8.jpg|300 px]][[File:microscope_sem_isi_super_iii_a_govdeals_685_8058_9.jpg|300 px]] | |
= Pump = | = Pump = | ||
| Line 254: | Line 254: | ||
= References = | = References = | ||
| − | + | ** Original schematic scan: [http://siliconpr0n.org/uv/super_iiia/schem_raw/ http://siliconpr0n.org/uv/super_iiia/schem_raw/] | |
| − | + | ** User manual: [http://siliconpr0n.org/uv/super_iiia/manual/ http://siliconpr0n.org/uv/super_iiia/manual/] | |
''' | ''' | ||
| − | uccs.edu PES415 has a sort of instruction manual: | + | uccs.edu PES415 has a sort of instruction manual: [http://www.uccs.edu/~tchriste/courses/PES415/SEM.pdf] |
| − | + | ** JM blog posts | |
| − | + | ** [http://uvicrec.blogspot.com/2014/04/a-new-toy-arrives.html http://uvicrec.blogspot.com/2014/04/a-new-toy-arrives.html] | |
| − | + | ** [http://uvicrec.blogspot.com/2014/06/rolling-with-sem.html http://uvicrec.blogspot.com/2014/06/rolling-with-sem.htm] | |
| − | + | ** Units for sale with pictures | |
| − | + | ** EAMTM: [http://www.machinedeal.com/en/profileprojectors-and-measuring-microscope/super-iii-a-111957/] | |
| − | + | ** buckeye43701: [http://www.ebay.com/itm/Scanning-Electron-Microscope-ISI-Model-Super-III-A-/321271545594?nma=true&si=OVGlVAabuHwcYtHSq03p071SPjE=&orig_cvip=true&rt=nc&_trksid=p2047675.l2557] | |
| − | |||
| − | |||
Latest revision as of 23:10, 27 December 2018
The third Super-Mini-SEM, ISI marketing shortened it to simply Super IIIA. However, the schematics still refer to it as the SMS-IIIA.
See SMS family page for schematics
JM has one
"SIII-A(K) (1976)"
Contents
Filament
Good overview of SEM filament types: Short Course.pdf http://www.reu.pdx.edu/SEM Short Course.pdf
Trying to find replacement filaments. Takes the ISI three prong type
Prices as of 04/21/2014
| Vendor | Item # | Description | Price/pack | Qty/pack | Qty/each | Notes |
|---|---|---|---|---|---|---|
| Ted Pella | 1426 | ISI / ABT / Topcon 3-pin | 425.00 | 10 | 42.50 | |
| Electron Microscopy Sciences | 81038 | STANDARD LOOP FILAMENTS for: ISI Instruments, ABT, Topcon New Filament, 3-prong |
416.00 | 10 | 41.60 | |
| Electron Microscopy Sciences | 81038-R | STANDARD LOOP FILAMENTS for: ISI Instruments, ABT, Topcon Rebuilt Filament, 3-prong |
1 | 32.00 | ||
| SPI Supplies | 5232N-BA | Topcon/ISI 3-pin | 525.49 | 10 | 52.55 | |
| SPI Supplies | 5232RB-AB | Topcon/ISI 3-pin (rebuilt) | 1 | 41.57 | ||
| EB Sciences | ISIE | Standard loop, 3 Prong | 405.00 | 10 | 40.50 | |
| EB Sciences | ISIE | AR loop, 3 Prong | 455.00 | 10 | 45.50 | |
| Fisher Scientific | [&xrefPartType=From&savings=0.0&xrefEvent=1398144201666_2&searchType=PROD&hasPromo=0 50-290-87] | NEW FILAMENT 3-PRONG | 509.60 | 10 | 50.96 | |
| Soquelec | A20135 | ISI (2-prong, new) | 1 | 68.10 | NOTE: 2 prong for comparison | |
| Soquelec | A20140 | ISI (2-prong, rebuilt) | 1 | 39.00 | NOTE: 2 prong for comparison | |
| ME Taylor | F-3 | Topcon/ISI 3-pin style Filaments - Package of 10 | 275.00 | 10 | 27.50 |
EB Sciences
Has several filament types
Type AR
"The Energy Beam Sciences exclusive AR tip represents the state of art in filament technology. This special loop was developed for applications which demand the ultimate in mechanical stability and operating life. It is particularly recommended for use in multi-user environments and teaching laboratories. Its etched taper loop configuration and unique tip geometry enhance contrast and brightness, even at low kV. We can provide the AR loop mounted on any type of filament base. Whatever your application, you should see enhanced performance with the AR loop, when compared with the standard loop filament supplied by the EM equipment manufacturer."
Standard Loop
"Energy Beam Sciences Standard Loop Tungsten Filaments are designed to conform to Original Equipment Manufacturers' specifications across the industry. Our filaments are individually manufactured with careful attention to detail, maintaining their precise tip geometry and using superior assembly techniques and stringent quality control for consistency and dependability in even the most demanding applications. At Energy Beam Sciences, we offer cost effective, reliable solutions for these and all of your EM consumable needs. Please call our e-Beam product specialist today to find out more about our quality products!"
JM electron gun
Original unit that SEM came with.
XXX: supposedly this SEM takes a "three prong filament" and in fact has a three contact base. What is difference between the two types?
Wehnelt assembly:
Base it plugs into:
Taking off top retainer:
Removing the Wehnelt:
Note that the filament is slightly twisted to form the tip. Also, its burned out
Wehnelt bottom:
Side of the filament assembly
Filament tip:
Everything together:
lapointe2
http://members.tm.net/lapointe2/scanning_electron_microscope.html
Great resource on this model. Unfortunately, links to pages are hidden throughout the text so I've tried to index it a bit better. I also have mirrored the site in case it disappears:
- Home
- Operation
- Like a user manual: read it
- High vacuum system
- High voltage power supply
- Anti-vibration mounts
- DP cooler
- DIY chiller
- Changing the filament
- Changing the scintillator
These are less about the SEM and more about his particular logistics:
- Vacuum pump and gauge
- Hooking up his roughing pump
- Plug it in
- Hooking up his electrical lines
Cleaning
Wenol metal polish recommended for cleaning. MSDS lists
- Ammonia Solution 25%: 1-5%
- Kerosene 200-230: 10-20%
- White Spirit 150/200N: 10-20%
- Aluminum oxide (pigments): 25-35%
- Coco fatty acid diethanolamide: 5-15%
- Water: 35%
https://www.tedpella.com/material_html/polish.htm#Anchor-47857
- "Wenol® is widely used as cleaner and polish for electron microscope applications, ion beam systems, vacuum coating systems and general lab applications. Wenol® has been originally formulated for use on hard metal surfaces such as stainless steel. It can be used to clean and polish hard metal parts for vacuum systems. The carrier fluid dissolves in most hydrocarbons and is easily removed. Wenol® is petroleum based and does not contain silicones. It is not recommended for use on soft metal such as aluminum."
Ted Pella also has Unipol…not sure when to use one vs the other. Generic Wenol?
- Aluminium oxide: 20-40
- Ammonia solution: 0.1-5
- Destillates (petroleum), hydrotreated light: 20-40
- Naphtha (petroleum), hydrotreated light: 2.5-10
read somewhere 100ml ~= 3.4oz Wenol
o-rings
Drawings in this section are from Lapointe's website
may consider replacing o-rings as the vacuum is sub-par. By the time I disassemble everything might as well replace them
"o-rings are labeled with their aerospace standard AS568A size"
High vacuum assembly
Abbreviations:
- ID: inner diameter
- OD: outer diameter
- CS: cross section
What is difference between nominal and actual size?
| AS568A size | ID | OD | CS | Qty |
|---|---|---|---|---|
| 011 | 1 | |||
| 013 | 1 | |||
| 118 | 2 | |||
| 128 | 1 | |||
| 141 | 1 | |||
| 214 | 1 | |||
| 215 | 2 | |||
| 216 | 1 | |||
| 220 | 2 | |||
| 221 | 1 | |||
| 222 | 2 | |||
| 226 | 1 | |||
| 233 | 1 |
Valve assembly
| AS568A size | Qty |
|---|---|
| 006 | 1 |
| 121 | 2 |
| 123 | 1 |
Air valve
Relieves chamber to atmosphere for exchange while still allowing DP to keep hot
"I will not buy this air valve, it is scratched"
needs to be turned down on lathe or replaced
JM unit
CKD
MODEL SMC-01-23
VOLTS
Hz 50/60
SERIAL
WATTS 3
ORIFACE
TYPE PT 1/8
PRESS
SPECIAL
CHUKYO ELECTRIC CO. LTD Nagoya Japan
has air filter on it
lapointe unit
has hose connector instead of air filter but otherwise same unit
EDAX
The extra vacuum ports are likely intended for EDAX and in fact I did find one such unit.
govdeals
All images in this section are from GovDeals
"You will be bidding on a International Scientific Instruments Model Super III A Scanning Electron Microscope. The unit was purchased in 1979 and converted to digital and updated in 1999. This unit comes with a Robinson Backscatter detector, Gresham Titan X-ray pulse-processor, 4PI digital imaging attachment, control computer and software. The agency is reporting the unit is operational except for the X-ray detector analyzer and the software is up to date (uses Macintosh OS9). There are miscellaneous spare parts, filament assemblies, a manual, schematics and a TMC anti-vibration platform is included…located on the Winthrop University Campus in Rock Hill, South Carolina."
This is by far the most pimped out unit I've found so far:
- Computer image capture
- Maybe computer control?
- Robinson Backscatter detector (is that the special PMT assembly?)
- Gresham Titan X-ray pulse-processor (for the EDS?)
Pump
How many L/min recommended?
References
- Original schematic scan: http://siliconpr0n.org/uv/super_iiia/schem_raw/
- User manual: http://siliconpr0n.org/uv/super_iiia/manual/
uccs.edu PES415 has a sort of instruction manual: [1]
- JM blog posts
- http://uvicrec.blogspot.com/2014/04/a-new-toy-arrives.html
- http://uvicrec.blogspot.com/2014/06/rolling-with-sem.htm
- Units for sale with pictures
