英国采购需求：简单测量工具，步距规

I am interested in placing an order for four Digital Step Gauges with a precision of ±10 0.01mm — specifically, two for left-handed use and two for right-handed. Before moving forward, I would appreciate it if you could provide a detailed quote that includes the total cost. Additionally, I would like to know if these gauges come with a calibration certificate as part of the purchase. It's essential for me to ensure that I'm getting quality products that meet my specifications. If possible, could you also share any available information regarding the lead time for delivery? This will help me plan accordingly for my operations. Looking forward to your prompt response with the requested details. Thank you!