How about a non-folding ruler for you shop? I don’t think I could get along without my Starrett 6 inch ruler in my apron pocket
I also often use the blades from my Starrett combination squares as rulers:
But what about other specialty rulers that folks sell?
I did a bit of looking around on the internet and found these:
For Rivets
Dividing Rule
http://www.leevalley.com/US/wood/Page.aspx?p=32575&cat=1,43513,51657
Versa Ruler
Ring Ruler
Data Ruler
Graph Ruler
Bike Spoke Ruler
Protractor Ruler
https://www.amazon.com/Stainless-Digital-Goniometer,angle-Ruler,angle-Definition,ruler/dp/B012699WDI/ref=sr_1_fkmr0_4?ie=UTF8&qid=1476998265&sr=8-4-fkmr0&keywords=alumicolorcenter+finder+ruler
http://www.ebay.com/itm/HQ-Angle-Engineer-Protractor-Finder-Measure-Arm-Ruler-Gauge-Tool-Brass-Fittings-/401090354295?hash=item5d62d91c77:g:yAIAAOSwxvxW61VV
Hobby Rulers
http://mnpctech.com/pc-mod-tools/pc-mod-ruler/pc-modder-ruler-and-gauge.html
Model RR Rulers
General Purpose Rulers
Straight Edges
Center Finders
Scales
https://www.amazon.com/dp/B012OHB848?ref_=ams_ad_dp_asin_1
Printing Rulers
Parallel Ruler
Mat Cutting Straightedge
Curve Rulers
https://www.amazon.com/s/ref=nb_sb_noss?url=search-alias%3Daps&field-keywords=720193121121
https://www.amazon.com/gp/product/B000RZ889S/ref=s9_acsd_hps_bw_c_x_1
https://www.amazon.com/gp/product/B002TVUL4I/ref=s9_acsd_hps_bw_c_x_8
https://www.amazon.com/gp/product/B004BNEUC6/ref=s9_acsd_hps_bw_c_x_9
Phi (Golden Ratio) Rulers
http://www.leevalley.com/US/wood/Page.aspx?p=57625&cat=1,43513
Stop Rulers
http://www.leevalley.com/US/wood/page.aspx?p=61607&cat=1,43513
Hook Rulers & T-End Rulers
http://www.leevalley.com/US/wood/Page.aspx?p=40923&cat=1,43513
Metalworking Rulers
Yardsticks
Sewing – Seam allowance rulers _ There must be hundreds of different ones – especially for quilting – but here are a few.