1set single line elevator rail gauge guide ruler elevator guide ruler Guideway positioning ruler School board guide ruler

Attention: Due to different Monitor, the color may have difference Due to hand measure ,Please allow 1-3% difference tolerance Due to long shipping, the item may damage in transit, if the item damage, pls contact us firstly immediately before leave feedback, thanks for your understanding Remark:goods ship with logo without logo by random ,two scales design ship by random ,please note it ,friends .

different model for choose!